< Back Holiday Cacti Janelle Rietz-Kamenar Thanksgiving and Christmas cacti are beautiful flowering holiday plants Thanksgiving cactus (Schlumbergera truncata) and Christmas cactus (Schlumbergera bridgesii) are two beautiful flowering holiday plants. They are often given as gifts during the festivities. Believe it or not, these plants are native to Brazil, but have been a favorite indoor plant in the United States for many years. They can live a very long time (100+ years). Some people have trouble getting them to bloom and there are a few tricks one needs to be aware of to produce healthy, vibrant blooms. First, holiday cacti like high humidity and bright, filtered light. They need relatively moist soil with 1 part potting soil, 2 parts peat moss and 1 part sand. They do not tolerate standing in water or extreme cold air drafts. Holiday cacti, however, do need shorter days and cooler nights in order to produce blooms. Placing plants in a cool, bright location where daytime temperatures are 65-70 degrees and evening temperatures are 55-65 degrees will encourage bud development after approximately 5-6 weeks. Once the plants have bloomed, reduce the frequency of watering until spring when there is more active growth. These plants are relatively easy to take care of if you follow these instructions. If you are having trouble with your plants blooming there are usually 3 possible causes (assuming the plant is healthy): Indoor air is too warm: lower the room temperature to 55-65 degrees at night, 60-65 degrees during the day. Plant days are too long: this is usually not an issue in Minnesota if near a window but one can put the plant in total darkness for a minimum of 12 hours. Plant does not have enough nutrients to produce buds. Fertilize the plant at half strength with a fertilizer that is lower in nitrogen and higher in phosphorus and potassium (0-15-10). For a more comprehensive article about these plants, check out this website: Common Issues with Holiday Cacti Photo credit: Janelle Reitz-Kamenar

< Back African Violets Julie Harris, Master Gardener African Violets are one of the most popular houseplants because they require little maintenance and, cared for properly, bloom several times a year. But, as with any plant, they do have specific needs that you must know and pay attention to in order to provide the color and pleasure that you are hoping for. Read this article to understand how to achieve a happy, healthy African Violet in your home. African Violets are a popular houseplant because they are low maintenance and if cared for properly, will bloom several times a year. African Violets ( Saintpaulia ionantha ) were discovered in the 1890s by Baron Walter von Saint Paul in Tanzania. Ionantha refers to the violet color of the flowers, although many hybrids and varieties are now available, including different flower colors. Today, you can find African Violets that are white, pink, maroon, blue, lavender, violet, and deep purple. African Violets can be found in different sizes ranging from 4 to 8 to 16 inches wide to more than 16 inches wide. They have a mounded or round form. Different varieties may have different flower and leaf shapes. The flowers may be single, semi-double, double, ruffled or star shaped. Leaves may be round, heart-shaped or oval and have a fuzzy, velvety texture. African Violets should be planted in containers no more than one-third the width of the plant’s leaf span. They have fine roots and require well-drained soilless potting mix with a pH of about 6.2 – 6.5. Plant containers should have at least one hole in the bottom to allow water to drain. They should be repotted in fresh potting mix once a year. Fertilize the plant each time you water them. Use one-quarter of the recommended amount of fertilizer to keep the roots from being damaged. Fertilizers specially formulated for African Violets can be purchased. In their natural habitat, African Violets received filtered light from the forest canopy. In your house, they need 10 – 16 hours of light and 8 – 10 hours of darkness to flower. They will grow best in a bright, north-oriented exposure; although in the winter months, they may prefer a southern exposure. Fluorescent or LED grow lights can also be used. If your plant has dark, healthy leaves but no blooms, try increasing the light. Conversely, if your plant is not blooming and has pale leaves, reduce the light. As for temperature – if you are comfortable, your African Violet is comfortable. They like 40 – 60% humidity. Grouping plants together is helpful or they can be set on trays of pebbles and water. An even temperature should be maintained and they do not like drafts. Water with room-temperature distilled water or rain water. The potting mix should be moist at all times but not soggy. Overwatering is a common reason that African Violets do not survive. Water just the potting mix as water may cause leaf spots. Do not mist the foliage as it, too, may cause leaf spotting. African Violets can be watered from above but it is not recommended as the plant is susceptible to crown rot. You can also set the pot in a bowl of room-temperature water, 1 – inch deep. When the soil surface feels moist, remove the plant from the water and allow the water to drain from the pot. Do not let the pot sit in water for more than 30 minutes. You can also use a wicking system (see references below) or use self-watering pots. Common problems and solutions: Leaves are long and narrow Not enough light; temperature is too cool Leaves are pale Too much light Plant is limp and wilted Over watering; poor drainage If roots are mushy, brown and slimy, the plant is not likely to survive Leaf spots Water left on leaves Pale leaves, lack of growth Nutrient deficiency, not fertilized regularly Tight plant centers, rusty-colored leaves Over fertilization African Violets can provide many years of pleasure in your house if you follow these fairly straightforward rules for nurturing them. Photo credits: University of Minnesota Extension (1, 2, 3)

< Back The Nature of Oaks: The Rich Ecology of Our Most Essential Native Trees By Douglas W. Tallamy, Timber Press, Portland, OR, 2021 Oak trees. Who doesn’t love this bold and majestic tree species in our landscape. In addition to their beauty, oak trees contribute mightily to the health of our environment. To learn more about the mighty oaks, read Douglas Tallamy’s excellent book, ”The Nature of Oaks.” Reviewed by Jim Lakin, MD, Master Gardener Did you know that the seeds we religiously put out for the birds each winter provide scant nourishment for most species? A few, such as doves and finches, are granivores and do just fine. Most birds, however, are insectivores and depend on this supplementation even in winter. So where do all our avian friends get “three hots” in the cold months? Surprisingly, a substantial portion of their winter diet comes from caterpillar stages tucked into the bark of many tree species native to North America. Of these, the oaks are the most efficient in providing larval feed for our feathered friends. Professor Douglas Tallamy provides an in-depth and fascinating account of the massive niche occupied by the various species of oak in the ecology of North America. Tallamy records the activities of the oaks and their many visitors from month to month throughout the year. In addition to being a winter-feeding station for birds, oaks serve numerous insect species as a refuge and feeding reservoir allowing them to complete their varied life cycles and integrate into the complex web of life in the North American woods. Their extensive root system stabilizes the soil and effectively combats erosion. In short, oaks support more life forms and interactions than any other tree species in our northern hemisphere. These giants form a keystone upon which so much of forest life depends. In addition to demonstrating the vital role played by oaks in our ecology, the author provides a useful guide as to which species of oak do best in the varying environments of the US as well as helpful hints in planting and nurturing these invaluable species.

< Back What is Compost? Sarah Heidtke, Dakota County Master Gardener Volunteer Have you seen signs around that say “Compost?” Maybe you’ve put bags of compost on your gardens already. Maybe you even have your own compost at home! What is compost? Read on with your curious child to find out what goes into this helpful mix and how we can help plants grow (and keep organic matter out of our landfills!) I think of compost as a really nutritious casserole or lasagna for plants. Did you know that plants need good nutrition, just like people? First, let’s talk about organic matter . Things that once grew as plants - grass clippings, fallen leaves, banana peels, even paper towels - can break down and become food for new plants when we add them back into the soil. Microbes are tiny living organisms that help break down this future compost. The best way for us to set this up is to layer “green” organic waste and “brown” organic waste (like we layer yummy ingredients between noodles in a lasagna!) So let’s start there: Examples of “green” organic matter: raw fruit and vegetable peels, egg shells, grass clippings, plant trimmings, tea bags, and coffee grounds Examples of “brown” organic matter: straw, twigs, shredded newspaper, paper towels, brown leaves, sawdust When the helpful bacteria, tiny microbes, worms and bugs start eating and mixing our green and brown layers, the layers start to break down and even make energy. The goal is for the pile to get warm enough to “cook” out the kinds of germs that get stinky or make us sick. It’s just like we cook some of our foods to make them safe and tasty for us to eat. People can help things along by turning over the mix - this helps it break down evenly and adds oxygen and moisture to encourage the process. If the weather gets really dry, spray down the pile with water now and again between rain showers. It can take some patience, but eventually you will have fresh compost ready to mix into your planting soil! Where does this happen? Sometimes community compost sites make BIG batches of compost after they collect organic waste from many places. This could be from compost bins near the trash and recycling cans like these - see the one that says “COMPOST?” Or, Dakota County (as well as other counties) has a program where residents can bring their food waste in special biodegradable bags to a public site like this one at the Holland Lake parking lot of Lebanon Hills Regional Park. See this website for more information on Dakota County’s Organics Drop Off program https://www.co.dakota.mn.us/Environment/Residential/Organics/Pages/organics-drop-off.aspx Some people make compost right at home! You can buy a compost bin made just for this purpose through many vendors online or through Dakota County https://recycleminnesota.org/compost-bins-rain-barrels/ . Or you can make your own! Here are some helpful websites with instructions for making a home compost bin (with an adult!): https://thecompostadores.files.wordpress.com/2011/05/photographic-steps-to-build-a-bin.pdf https://www.treehugger.com/diy-compost-bins-you-can-build-one-day-video-4858394 You can even take a class with the Minnesota Landscape Arboretum for a compost bin building demonstration here: https://www.arboretum.umn.edu/getdirtyactivities.aspx Here’s a 3-part system of compost at the Arboretum’s Children’s Garden: The older organic materials get moved “next door” to make room for new green and brown layers in the first section. If you haven’t checked out the Green Play Yard and learning garden next to the Marion Andrus Learning Center there yet, I truly recommend it - it’s fantastic! So kids, let’s review - what’s compost? Organic matter made from plants that helps plants grow! It adds nutrients and texture to the soil so the plants can get oxygen and water through their roots. Compost that’s ready for this job should not have a stinky or rotten smell. How can kids help to make compost? Help collect food waste like peels, coffee grounds, tea bags, greens and egg shells that won’t get eaten into a container until it is full and ready to take to your home or community compost site. Toddlers and older can carry a closed pail or small bag of organics and participate in the cycle of their food. Gather black and white newspapers, brown cardboard and paper towels (shredded to help them break down faster), sticks, and leaves for the brown layer at home. Use a large garden fork or shovel to stir up your compost pile now and again, or use the handle on some bins to turn the pile around. It’s not an exact science, so put those growing muscles to work mixing things up! Keep an eye out for helpful signs at parks and businesses that show you where to put compostable items and keep them out of the landfill. For a great factsheet about home composting, see this link from the Minnesota Pollution Control Agency https://www.pca.state.mn.us/sites/default/files/w-hhw1-21.pdf Book Time! Read on at Dakota County Libraries for more kid-friendly information about COMPOSTING: Compost Stew: An A to Z Recipe for the Earth by Mary McKenna Siddals and Ashley Wolff, recommended for Ages 2-6 Garbage Helps our Garden Grow: A Compost Story by Linda Glaser, recommended for Ages 6 & up Photo Credit: Minnesota Pollution Control Agency Website (2), Sarah Heidtke (1,3,4,5,6) , Compost Stew: An A to Z Recipe for the Earth by Mary McKenna Siddals and Ashley Wolff (7) & Garbage Helps our Garden Grow: A Compost Story by Linda Glaser (8)

< Back The World Needs Birds, Butterflies, and Bees Mary Gadek, Dakota County Master Gardener Swoosh, swish, and buzz! With the start of summer, children look in awe at the birds, butterflies, bees, and other pollinators bustling around outside. Investigate with your young gardeners to understand why pollinators are important to our gardens and explore ways to interact with pollinators by reading this article. What Are Pollinators? Pollinators are creatures who help gardens, parks, farmlands and other landscapes bring us food, resources, and beauty to our world. They carry pollen from one plant to another to fertilize (or feed) plants to allow them to make fruit or seeds. Bees are the most well-known pollinators but other varieties include ants, flies, beetles, and birds. Why Are Pollinators Important? Pollinators are important to our world because they: Help feed the world: Pollinators are necessary for bringing us food and other resources. They are responsible for about one of every three bites of food we eat and are important in producing nutrient-dense foods, like fruits and nuts. Aid the growth of plants: 80% of plants rely upon pollinators to reproduce and continue to grow. We need plants to flourish in the world to feed our animals, to stabilize (or hold together) soil, and to filter water to keep it clean. Give and maintain the diversity of plants: A successful plant landscape requires plant diversity (or variety) to survive. By pollinating many types of plants, pollinators keep our gardens and farmlands growing strong and beautiful. When plant diversity exists, the failure of one plant in our garden is not devastating because we still have others to use. Also, our gardens and farms can continue to grow for many years and provide beauty to the world. How Can You Help Keep Pollinators in Our World Plant an assortment of flowers that have pollen and nectar. https://beelab.umn.edu/plant-flowers Create pollinator habitats (or homes) and nesting sites. https://extension.umn.edu/lawns-and-landscapes/pollinator-nests#:~:text=Natural%20habitats,be%20left%20in%20the%20ground Eliminate or limit the use of pesticides that are dangerous to pollinators. https://beelab.umn.edu/pesticide-free-plants To further investigate pollinators with your children, here are some activities: DO *Plant in your garden: https://beelab.umn.edu/plant-flowers *National Park Service activity booklet for pollinators: https://www.nps.gov/sagu/learn/kidsyouth/upload/pollinator-activity-booklet.pdf *Make a bee bath https://www.hammerandaheadband.com/bee-bath-diy/ READ A colorful and informative book for pre-readers and above illustrates why we need bees in our world. Available for purchase: “ Give Bees a Chance .” check out the book at the Dakota County Library: ISBN: 9780670016945 References https://extension.umn.edu/lawns-and-landscapes/flowers-pollinators https://extension.umn.edu/natural-resources-news/important-lessons-pollinators#:~:text=Pollinators%20and%20plants%20mutually%20support,stigma%20to%20enable%20plant%20reproduction . https://beelab.umn.edu/plant-flowers https://extension.umn.edu/lawns-and-landscapes/pollinator-nests#:~:text=Natural%20habitats,be%20left%20in%20the%20ground https://beelab.umn.edu/pesticide-free-plants Photo Credit: Mary Gadek (1,2,3)

< Back China Bayles Series By Susan Wittig Albert In the mood for a little light reading while exploring the world of herbs? Master Gardener and herb expert Shari Mayer reviews the “China Bayles” mystery series by Susan Wittig Albert. Each of the multiple volume mystery series centers around a particular herb. Read this article to learn more about this clever and informative mystery series. Reviewed By Shari Mayer, Master Gardener In the mood for a little light reading with an educational bent? Check out the China Bayles series by Susan Wittig Albert. This series can be likened to ‘The Cat Who…’ mystery novels, by Lilian Jackson Braun. Even if you’re not a mystery buff, these books are delightful and you learn a lot about herbs along the way. It’s a lovely read for a road trip, up at the cabin, or just sitting on your porch after a long day gardening. This series is comprised of 28 mysteries to date, each centering around a particular herb. It’s a great way to explore the world of herbs. I would recommend reading in order, although it’s not required. Albert has been publishing this series since 1992, garnering several awards along the way, including the Agatha award. She has a Ph.D. in English from Berkeley, and has also published under pen names, including Carolyn Keene and Robin Paige. In this series China Bayles is a high-powered attorney, who left that world behind to open an herb shop in a small Texas town. Each book is centered around a particular herb, and it’s amazing how much you learn about that herb as the plot thickens. I’ve been recommending this series for years now, and it doesn’t matter your age or inclination, everyone seems to love them. If you haven’t tried them, now’s the time. I used to get them from the library, but I hear Kindle, as well as Amazon Prime, both have options. Happy reading!

< Back Holiday Trees Tori Clark, Master Gardener Tis the season. If your holiday decorating includes a fresh cut tree, here are some things to consider before selecting your tree and some tips to ensure it lasts throughout the season. If your holiday decorating includes a fresh cut tree, there are some things to consider before selecting your tree and tips to ensure it lasts throughout the season. Most of the trees you will find at cut-your-own or pre-cut lots will be one of these four types: Fraser fir trees have bright green, flattened needles; ½ to 1 inch long. They have some of the best needle retention and a pleasant scent. Fraser firs have strong branches which angle upward making them a great choice for heavier ornaments. Fraser fir Balsam fir needles tend to be a little longer, about ¾" to 1 ½" . The long-lasting needles are flat and rounded at the tip. These firs have a dark green color and are very fragrant. Balsam fir Scotch pine has very stiff, dark green needles about one inch long. The needles will stay on the tree even when dry. Scotch pine White pines have soft, blue-green needles, 2 to 4 inches long, that will stay on throughout the holiday season. The trees have a full appearance and are best suited to smaller ornaments. White pines have little or no fragrance, but can have less allergic reactions compared to more fragrant trees. White pine Whether you are shopping at a pre-cut tree lot in town or cutting your own, make sure you have a good idea of the height and width the desired spot in your home can accommodate. Also check your tree for freshness. Trees are often cut weeks earlier, so make sure the needles are green and flexible and do not fall off when you run your hand over a branch. If you are not putting your tree up when you bring it home, keep it in a shaded unheated location. A fresh cut to the trunk of your holiday tree will help it last through all of your holiday celebrations so remove 1-2” of the trunk then place the tree in a stand with water. A good quality tree stand will hold one to two gallons of water. Keep it filled with water for a long-lasting tree that is fragrant and doesn’t drop too many needles. Be sure to keep your tree away from heat sources like vents and fireplaces to reduce drying. Look for resources in your community for recycling your tree after the holidays. Photo credits: www.forestryimages.org (1, 2), www.flickr.com (3, 4)

< Back Garden Mulch and Jumping Worms There are many things to consider when choosing which type of mulch to use. Aesthetics is one consideration but mulch that will help and not hurt your garden soil is another. This article will help you select the mulch that's right for your garden. Garden Mulch and Jumping Worms There are several options for mulch or soil covering in our gardens. Choices can be either organic, which are compostable materials that improve soil fertility, or inorganic film coverings that can be black, red, green or silver colored. Inorganic film mulches are often sold in rolls. Mulch can improve our plants and gardens in the following ways: · Moisture retention/water conservation · Soil temperature control and stabilization · Weed suppression – weed growth is eliminated when light is not available · Soil borne disease prevention · Improved soil fertility through decomposition of organic mulches left on the top of the soil · Minimize soil erosion and compaction from heavy rains and help with water absorption · Improved landscape appearance with clean and neat mulch between plants In the spring, gardeners have to decide what type(s) of mulches to use. The best mulch application time is after the plants are established, four to six inches tall, and the soil has warmed up enough for active root growth. Mulch applied too soon will delay root development. Be sure not to touch the plants with the mulch. Many plants such as tomatoes are planted only after the soil is sufficiently warm. For tomatoes and other warm season transplanted plants, it is best to apply the mulch immediately to avoid soil splash-up/soil borne diseases. If you are using an inorganic film, you can add a couple of layers of newspapers under the film to help with weed suppression. The newspaper is a safe, compostable layer. Depth for most organic mulches is two to three inches to provide the positive results described above without becoming too heavy. Mulch applied too deep can cause a lack of oxygen to roots, can yellow foliage, and could provide a space for small burrowing animals to feed on plant stems. In fact, be sure that the mulch is close but not touching the stems! Favorite organic mulches include straw with newspaper under it to prevent light to seeds, compost with newspaper under it, brown decomposing paper rolls, dried grass clippings, and mulched leaves. Other possible organic mulches include cocoa bean hulls, pine needles, and crushed corn cobs. Gardeners who choose to use straw should be sure to buy tight bales that do not have too many seeds. Some gardeners have also successfully used burlap bags, and they can be reused year after year. Mulched leaves may need to be reconsidered this year and in the near future due to jumping worm concerns. Jumping worms are a type of angleworm, but they change the soil texture to make it look like coffee grounds. As they move and eat, they strip the soil of nutrients and kill plants. They are recognizable, in part, by their whipping action. They live in leaf litter on the top floor of forests and hatch in the soil in late spring. All gardeners in Dakota County need be aware of them and on the lookout for them. For more detailed information about them, please read the University of Minnesota article titled “Jumping Worms” . Another excellent article is “Coping with Jumping Worms” by Karen Randall. The damage jumping worms can do should cause gardeners to reconsider the types of mulches that they add to their gardens. At this time, there are no known ways to easily rid the soil of jumping worms once they are present. Inorganic mulches may be considered as alternatives to organic mulches. They do not break down and add nutrient value to the soils, but they help with several of the mulch attributes described above. Black, red, green and silver plastics provide weed control, splash-up protection, and some temperature control. Red plastic used with tomatoes is said to improve crop harvest by 20% because it reflects growth-enhancing light waves from the sun. It can be used with newspaper under it to control weeds and help conserve water. The down side of inorganic mulches, in addition to initial cost, is that they add to environmental plastics and may or may not be reused in a future year. Inorganic mulches can be found either in garden centers or in seed catalogs. Mulch can be a great addition to your flower or vegetable garden. However, take care in choosing a type that will benefit your garden. Photo credits: Janice Gestner (1, 3, 4), University of Minnesota Extension (2)

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Contact Dakota County Master Gardeners Volunteers We would love to hear from you! Visit our Speakers Bureau page if you are interested in having a Master Gardener speak to your group. Use the contact form on this page or send us an email at : mgdc@co.dakota.mn.us. Submit Thank you for contacting Dakota County Master Gardener Volunteers. One of our volunteers will respond soon. Contact Information Dakota County Master Gardener Volunteers c/o Ann Liberty Western Service Center – Dakota County 14955 Galaxie Ave., Suite 286 Apple Valley, MN 55124 Tel: 651-480-7700 Email: mgdc@co.dakota.mn.us

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< Back Pound Flowers for Summer Fun By Brenda Hansell, Master Gardener Many of the flowers you have enjoyed throughout the summer will soon fade away. Even cut flowers last only a few days in the house. Here is a fun way to preserve flowers and entertain the children. Flower pounding is an easy activity for most any age. Adult guidance and assistance will vary from child to child. When complete, my granddaughter jumped up, threw her hands in the air and shouted: “YAY, ART!!” (‘nuf said.) Read this article to learn how to share this fun activity with the child in your life. Materials: Watercolor paper (optional card stock) Parchment or wax paper Masking tape Hammer or mallet Fresh flowers Steps: 1) Gather the flowers. Bright colors such as red, yellow, and blue release more intense pigments. 2) Trim off the stems close enough to the base of the flower to permit it to lay flat while keeping the bloom intact. Use some of the leaves as well. 3) Flowers with large centers, such as cone flowers, will require removal of the thick center. Use only the carefully placed petals. Otherwise, there will be too much dark pollen “explosion.” (Though it does create a rather interesting, abstract appearance!) 4) Work on a hard, flat surface 5) Arrange the flowers face down on the watercolor paper. 6) Carefully cover with the wax paper 7) Press down firmly on the wax paper and tape in place 8) To get the feel of how firmly to pound & which flowers transfer best, you may want to try one or two “practice flowers” on a separate paper. (This is an optional step.) 9) Using firm pressure begin pounding the flowers, working in from the edges 10) Carefully, lift the wax paper to check the transfer 11) Continue pounding until desired effect is achieved. 12) Some pieces of petals and leaves may stick to the paper. Gently use your fingernail to scratch them off. 13) Frame and admire the finished piece of ART! Note, some folks embellish the print with colored pencils or fine painted brush strokes. Photo credits: Branda Hansell (all)