When should I plant bush beans in ZIP 21201?

In ZIP 21201, the main bush beans target is around Apr 22, based on the representative Baltimore frost station and USDA zone 7b.

When should I start bush beans seeds indoors in 21201?

Bush beans is usually direct-sown for ZIP 21201. Use the Apr 22 planting window instead of starting it indoors.

Is this a guaranteed planting date?

No. GrowZone uses frost-date estimates, hardiness zones, and crop timing rules for planning. Local microclimates and current weather can shift the right date.

ZIP 21201 planting calendar

When to plant bush beans in Baltimore, MD - Zone 7b

Q: When is the first frost in Baltimore?

Baltimore (ZIP 21201) has an average first fall frost around Nov 5, leaving about 204 frost-free days.

In ZIP 21201, plant bush beans around Apr 22; this uses the Baltimore frost station, USDA zone 7b, and bush beans timing rules.

Your Baltimore calendar has a 204-day estimated frost-free season. This estimate uses the representative Baltimore frost station, USDA zone 7b, and bush beans timing rules.

Source: baltimore-inner-harbor frost station, USDA zone 7b, last updated 2026-06-28. Verify locally before planting high-value crops because microclimates, current weather, and yard exposure can move the safe date.

USDA zone 7b Baltimore frost station University of Maryland Extension Updated 2026-06-28

Read the method

Answer first

When to start bush beans seeds indoors in Baltimore

In ZIP 21201, bush beans is usually direct-sown around Apr 22 instead of started indoors.

Bush beans is normally direct-sown in Baltimore. Use around Apr 22 as the outdoor planting window for ZIP 21201.

Seed starting schedule

Bush beans dates for Baltimore, MD

Step	Date	How to use it
Direct Sow	April 22, 2026	Sow seed outside when the crop and soil can handle the window.

Last frost

When is the last frost in Baltimore?

Baltimore (ZIP 21201) has an average last spring frost around Apr 15.

First frost

When is the first frost in Baltimore?

The average first fall frost is around Nov 5, giving about 204 frost-free days.

Season map

Bush beans windows by month

JanFebMarAprMayJunJulAugSepOctNovDec

Direct sow

Apr 22

Harvest

Jun 16

Frost watch

Sep 11

Reminder workflow

Every date has a next action

Last frost windowApr 15

Direct sow bush beansApr 22

First bush beans harvest windowJun 16

Last bush beans sowing targetSep 11

Signal	Value	Why it matters
Last frost estimate	April 15, 2026	Warm-season transplant risk starts falling after this window.
First frost estimate	November 5, 2026	Fall planting counts backward from this date.
Season length	204 days	Longer seasons can support succession crops.
Spacing	4-6 in	Airflow and root space affect yield.
Soil temperature	60 F+	Seeds and transplants stall in cold soil.

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Local data

Why this date changes by ZIP

Baltimore frost history and USDA zone 7b shift the safe planting window. GrowZone uses a local representative station instead of one national rule.

University of Maryland Extension is the kind of local source to verify against when a crop is expensive, weather is unusual, or your yard has a cold pocket.

Crop note

Bush beans timing notes

Wait until soil is warm, then sow every two weeks for a steady crop. Bush beans prefers full sun, 4-6 in spacing, and soil near 60 F+.

For fall, count backward from Nov 5. A conservative last sowing target is around Sep 11.