When to Plant in Maryland: Vegetable & Flower Planting Calendar
Maryland spans mountains in Garrett County to warm tidewater on the Eastern Shore, so frost dates can differ by more than a month across the state. Use this guide to time seed-starting, transplanting, and fall planting around your local frost dates. Maryland falls in USDA zones 5b–8a; median last spring frost (NOAA 1991–2020) runs from Mar 22 – May 6, and first fall frost from Oct 9 – Nov 26.
About these dates: Timings are counted from your average last spring frost date, which is only an average — a frost can still occur after it. Dates vary within a state by elevation, distance from water, and microclimate. Look up the frost date for your ZIP code (your state Cooperative Extension office or NOAA climate normals are good sources) and adjust for the current season’s weather and soil temperature.
Maryland frost dates by region
| Region | NOAA stations | Median last spring frost (32°F) | Median first fall frost (32°F) | USDA zone (approx.) |
|---|---|---|---|---|
| Western Maryland (Garrett, Allegany) | Oakland 1 Se, Frostburg 2, Cumberland 2 | Apr 15 – May 6 | Oct 9 – Oct 24 | 5b–6b |
| Frederick & Hagerstown | Frederick Police Brks, Hagerstown Washington Co Airport, Emmitsburg 2 Se | Apr 2 – Apr 22 | Oct 20 – Nov 6 | 6b–7a |
| Baltimore–DC corridor | Baltimore Wash Intl Airport, Beltsville, Rockville 1 Ne, Md Sci Ctr Baltimore | Mar 24 – Apr 10 | Oct 31 – Nov 21 | 7a–7b |
| Eastern Shore & Southern MD | Salisbury, Chestertown, Royal Oak 2 Ssw, Solomons | Mar 22 – Apr 3 | Nov 5 – Nov 26 | 7b–8a |
Source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991–2020, annual/seasonal freeze-date probabilities (32°F, 50% probability). Station-level medians; your yard may differ.
Look up more towns on our Maryland frost dates table, or enter your ZIP in the planting planner.
Maryland vegetable planting calendar
Find your local last-frost date, then count forward or back using the table below.
| Crop | When to plant (relative to last frost) | Notes |
|---|---|---|
| Peas | Direct sow 4–6 weeks before last frost | Tolerates light frost; sow when soil is workable |
| Spinach | Direct sow 4–6 weeks before last frost | Also sow 6–8 weeks before first fall frost |
| Lettuce | Direct sow or transplant 2–4 weeks before last frost | Bolts in heat; succession sow; fall crop too |
| Radishes | Direct sow 2–5 weeks before last frost | Fast (3–4 weeks); sow again in late summer |
| Kale | Start indoors 8–10 weeks before; transplant 2–4 weeks before last frost | Sow again 8–10 weeks before fall frost; frost sweetens leaves |
| Onions (sets/transplants) | Plant 2–4 weeks before last frost | Choose day-length type suited to your latitude |
| Potatoes | Plant 2–4 weeks before last frost | Soil about 45°F+; hill as plants grow |
| Broccoli | Start indoors 8–10 weeks before; transplant 2–4 weeks before last frost | Cool-season; harden off; good fall crop |
| Cabbage | Start indoors 8–10 weeks before; transplant 2–4 weeks before last frost | Cool-season; harden off; good fall crop |
| Tomatoes | Start indoors 6–8 weeks before; transplant 1–2 weeks after last frost | Wait for nights reliably above 50°F |
| Peppers | Start indoors 8–10 weeks before; transplant 2–3 weeks after last frost | Need warm soil (65°F+) |
| Eggplant | Start indoors 8–10 weeks before; transplant 2–3 weeks after last frost | Need warm soil (65°F+) |
| Beans (bush & pole) | Direct sow 1–2 weeks after last frost | Seeds rot in cold, wet soil |
| Sweet corn | Direct sow 1–2 weeks after last frost | Soil 60°F+; plant in blocks for pollination |
| Cucumbers | Direct sow 1–2 weeks after last frost | Frost-tender; watch for cucumber beetles |
| Squash | Direct sow 1–2 weeks after last frost | Frost-tender; watch for squash vine borer |
| Pumpkins | Direct sow 1–3 weeks after last frost (count back ~90–120 days from target harvest) | For October pumpkins, many sow in late May–June |
| Basil | Start indoors 4–6 weeks before; transplant 1–2 weeks after last frost | Very cold-sensitive |
| Marigolds | Start indoors 4–6 weeks before or direct sow after last frost | Easy warm-season annual |
| Zinnias | Start indoors 4–6 weeks before or direct sow after last frost | Easy warm-season annual |
| Tulips | Plant in fall when soil cools below ~60°F | Typically around first fall frost, before ground freezes |
| Daffodils | Plant in fall when soil cools below ~60°F | Slightly earlier than tulips is fine |
| Garlic | Plant cloves in fall, a few weeks before the ground freezes | Harvest the following early summer |
Tips for Maryland gardeners
- Watch soil temperature, not just the calendar — warm-season crops stall in cold soil. An inexpensive soil thermometer helps.
- Harden off transplants over 7–10 days before planting out.
- Plan a fall garden: count back from your first fall frost to sow lettuce, spinach, kale, and radishes in late summer.
- Keep weeds down early — see our weed identification guide.
Frequently asked questions
When is the last frost in Maryland?
Median last spring frost (32°F) in Maryland ranges from late March (lower Eastern Shore) to mid-May (western mountains) across NOAA stations, depending on location. Check the average for your ZIP code, and remember frost can occur after the average date.
What USDA zone is Maryland?
Maryland spans roughly USDA hardiness zones 5b–8a on the 2023 USDA map. Hardiness zones describe winter low temperatures, not frost dates.
When can I plant tomatoes in Maryland?
Transplant tomatoes outdoors about 1–2 weeks after your local average last frost, once nights stay above about 50°F. Start seeds indoors 6–8 weeks before the last frost.
Other Mid-Atlantic planting calendars
Delaware · Pennsylvania · New Jersey · Virginia · All states