What to plant in Zone 7 in May
Mid-spring in zone 7 is the sweet spot — the last frost is behind you (mostly), the soil is workable, and almost every summer bloomer can go in without protection. Here's exactly what to plant this week.
Zone 7 covers a wide swath of the country — from coastal Virginia through Tennessee and across to northern Texas — so "May" in zone 7 means slightly different things depending on where you garden. The shared truth: by the first week of May, your last expected frost date is behind you. By mid-May the soil is reliably above 55°F. From here through Memorial Day is the single best planting window of the year.
What goes in this week
If you have one weekend in May, spend it planting these:
Perennials. Coneflowers (echinacea), black-eyed susans (rudbeckia), shasta daisies, and yarrow can all go in the ground now. Buy them as small plugs or quart pots — they'll establish faster than gallon-size nursery stock and cost less. Water deeply twice a week for the first three weeks, then back off.
Heat-loving annuals. Zinnias, cosmos, and marigolds are the ones to direct-sow. The soil is warm enough that seeds germinate within a week, and you'll have blooms by July. Cosmos in particular hates being transplanted — direct sowing gives you better, taller plants.
Dahlias. Tubers go in once the soil hits 60°F, which in zone 7 lands somewhere between May 5 and May 20 depending on your specific location. Plant them 6 inches deep in full sun. Don't water until you see green shoots — wet tubers in cool soil is the #1 dahlia-killer.
What to wait on
Tropicals like cannas, elephant ears, and caladiums want the soil at 65°F before they'll do anything productive. In most of zone 7 that's late May at the earliest. If you plant them now they'll just sulk in the cold ground and rot.
The frost asterisk
Zone 7's "last frost date" is statistical, not a guarantee. The forecast 7 days out matters more than the calendar. If you see a 35°F low predicted within two weeks of planting tender annuals, throw a frost cloth (or even an old bedsheet) over them overnight. Most zone 7 gardeners get caught by one rogue cold night every 3–4 years.
Match plants to your specific location
Zone 7a (cooler half) and 7b (warmer half) have a 5°F difference in average minimum winter temperature, which translates to about 7–10 days of difference in spring planting timing. If you want timing keyed to your exact ZIP, GimmeBlooms builds a per-month planting schedule for your bed automatically — no more averaging zones.
Looking at zone 7 specifically? Browse the zone 7 flower compatibility list for the 80+ flowers in our library that thrive in your climate.
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