Spring in September
Plan Now to Start 2025 Blooming in Color
Spring begins this month! I know, it’s September, but on a gardener’s calendar, this is the month to begin planning for an awakening of eagerly blooming sprouts and a palette of spring colors. Whether you are a “bulb-beginner” like me or a bulb enthusiast looking to expand on some gardening ideas, continue reading as we discuss the what, where, when, how, and why of spring blooming bulbs with a few design tips planted along the way.
Patricia Johnson, Dakota County Master Gardener Intern
September marks the beginning of fall and so it’s time to start planting. What? Spring bulbs, of course. Sure, you may be a bit weary of gardening this time of year but before you put your gardening tools away, take out that trowel one last time and plant some spring bulbs. Why plant spring blooming bulbs? After a long Minnesota winter, the flowers of spring bulbs provide a great wealth of color in a variety of flower and leaf designs - an unabashed welcome to spring against the monochromatic color of the final days of winter.
When? There are different kinds of bulbs. Spring blooming bulbs are planted in the fall of the previous year. Summer blooming bulbs are planted in the spring of the same year. This article will only focus on spring blooming bulbs, also known as hardy bulbs. Examples of hardy bulbs are tulips, daffodils, iris, crocus and lilies. The local garden centers will have a selection of spring blooming bulbs beginning this month. Now through October is the ideal time when you should plant these bulbs (although they can be planted until the first frost). Make sure the bulbs are clean and solid, without mold, rot, cuts and bruising. When healthy bulbs are properly planted and cared for, spring blooming bulbs will give you years of enjoyment.
Before you plant your spring bulbs, consider where to plant them in your garden. Begin by taking pictures of your flower gardens throughout the seasons and take note of the sun and shade exposure throughout the days. This will help you determine what to plant and where to plant your bulbs as your existing plants progress through their own unique life cycles. Pictures will also aid in determining what plants to thin out and what plants to transplant along with spacing when the time is right.
My annual red petunias had a happy southwest-facing summer taking a front row seat to my colorful perennials but will soon relinquish their small plot of soil. My bountiful hydrangea and Black Eyed Susans, swaying feather reed grass, and my prickly Japanese barberry will then become a beautiful backdrop to groupings of snowdrops and allium. Both will be the ideal height ranging from three to eight inches. (Note that there are different sizes of allium ranging from short to quite tall, so look closely before you buy.) Snowdrops will bloom as early as March and allium will follow in May giving time for their surrounding neighbors to grow into full fruition, blooming in all their glory from June through fall.
It is always important to read the packaging to know how to plant the bulbs. Planting depths may range from three inches to twelve inches. According to the University of Minnesota Extension, “[g]enerally, plant bulbs two to three times deeper than their diameter. This will vary with the type of soil.” If you want to do advance soil preparation, do a soil sample test of the area you will plant your bulbs. Keep in mind that the turnaround for results may take up to three weeks, so plan accordingly. This will give you time to shop for bulbs.
After you have evenly spread the final layer of soil, watered thoroughly, laid chicken wire to ward off hungry squirrels and other wildlife, spread a layer of mulch, and labeled your plantings, take one final picture. Document your work so you can relish in the before and after pictures come next spring.
During the stillness of the upcoming holiday months, you will be free to consider your color theme for annual hanging baskets or planters for the upcoming year ahead. You can also explore the possibility of summer blooming bulbs as you await with anticipation your spring bulbs in blooming color.
REFERENCES:
https://www.dakotamastergardeners.org/annualsbulbs/bulbs-101
https://extension.umn.edu/how/planting-bulbs-tubers-and-rhizomes
https://soiltest.cfans.umn.edu/
https://www.youtube.com/watch?v=TTXODhmkJS0
Photo Credit: University of Minnesota Extension (1,2,4,5), Patricia Johnson (3)