April is the pivotal moment when Michigan gardens finally wake up from their winter slumber. This month provides an opportunity to get your hands in the dirt and take advantage of the increasing daylight and spring rains that provide natural irrigation for new plantings.
While Michigan’s “frost-free” date typically doesn’t arrive until mid-to-late May, April is the critical window for planting cold-hardy trees, shrubs, and perennials that thrive in the waking soil. Starting now ensures your landscape is well-established before the intense heat of July arrives.
Here is your practical guide to what to plant in your Michigan garden this April.
TREES AND SHRUBS
Spring is a prime time for planting, particularly for species that are still in their dormant stage. Planting in April allows these woody plants to establish a root system before they have to support a full canopy of leaves. Our experts often highlight specific varieties in April that offer spectacular early-season interest:
- Forest Pansy Redbud: Known for showy pink to purple flowers that appear on bare branches before the foliage emerges. Its heart-shaped, purple leaves provide stunning color throughout the season.
- Show Off® Forsythia: A compact shrub featuring brilliant yellow bell-shaped flowers from the ground to the tips of the branches. It is a reliable “herald of spring” in any Michigan landscape.
- Serviceberry (Amelanchier): If you want a native Michigan tree, look for the ‘Autumn Brilliance’ variety. It produces white blooms in April, edible berries in June, and fire-red leaves in October.
- Hydrangeas: Now is the time to plant “Old Wood” bloomers like ‘Oakleaf’ Hydrangeas (look for the ‘Alice’ or ‘Ruby Slipper’ varieties). They love the damp April soil to get their roots established before the humidity of summer kicks in.
- Evergreens: April is an excellent time to plant Boxwoods, Yews, and Arborvitae. Planting now allows them to overcome any winter desiccation and push out fresh, bright green growth as the temperatures rise.
- Fruit Trees: Apple, Pear, and Plum trees should be tucked into the ground as soon as the soil is workable. This gives them a full growing season to recover from transplant shock and prepare for future fruit production.
- Early Bloomers: Consider the Star Magnolia, which offers large, white, star-shaped flowers in early April, or the PJM Rhododendron, prized for its vibrant lavender blooms and extreme Michigan hardiness.
PERENNIALS
As the soil warms, April is the perfect time to add “workhorse” perennials to your landscape. Planting early allows these varieties to develop deep roots that will help them survive the dry stretches of August.
- Hardy Early-Bloomers: Plant Hellebores (Lenten Roses) and Bleeding Hearts now. These resilient plants are unbothered by the fluctuating temperatures of a Michigan April and provide some of the first nectar for emerging pollinators.
- Groundcovers: This is the ideal window for planting Creeping Phlox and Vinca Minor. Establishing these in April ensures they “knit together” quickly to suppress summer weeds.
- Dividing and Transplanting: April is the best time to dig up and divide overcrowded Hostas, Daylilies, and Ornamental Grasses. Moving them while they are still in their “pointed shoot” stage minimizes damage to the foliage and ensures vigorous growth in their new spots.
- Ferns and Shade Plants: As the ground thaws, it is the perfect time to plant Ostrich Ferns and Coral Bells (Heuchera). Varieties like ‘Palace Purple’ offer rich foliage color that lasts from spring through the first hard frost of autumn.
Crucial Tips for Successful April Planting in Michigan
- Dormant Planting: If you are planting seeds for native wildflowers like Milkweed or Ironweed, you can still scatter them in early spring if there is still a bit of snow or freeze-thaw activity. This natural “stratification” helps break their tough seed coats, ensuring better germination.
- Test Your Soil Moisture: Before planting, squeeze a handful of soil. If it stays in a tight mud ball, it’s too wet. Wait until it crumbles easily to avoid compacting your garden bed for the rest of the season.
- Hardening Off: If you bought plants from a warm greenhouse, you must “harden them off.” Gradually expose them to the outdoor wind and sun for a few hours each day over a week to prevent transplant shock.
- Mulch Early: Apply a fresh 2–3 inch layer of organic mulch around new plantings immediately. This helps regulate soil temperature during April’s “seesaw” weather and preserves the moisture from spring rains.
- Watch for Frost: While these plants are hardy, a sudden deep freeze can nip the tender new buds of a Redbud or Magnolia. Keep burlap or frost blankets handy to cover your prized early-bloomers if a significant temperature drop is predicted.
Come visit us this month to browse our fresh spring inventory. Our knowledgeable staff is ready to help you navigate the “starts and stops” of Michigan spring so you can plant with confidence.