When to plant potato in Baltimore

In Baltimore, typical last spring frost is April 1 and typical first fall frost is November 13. Typical last spring frost: April 1. Potato in Baltimore is a good fit outdoors. The suitable growing window of 227 days covers the 70–125 days this plant usually needs.

Potato

How to grow Potato Baltimore climate Weekly temperatures and windows

Where are you growing?

Comfortable

Tight fit in greenhouse

Comfortable in a cold frame

Potato in Baltimore is a good fit outdoors. The suitable growing window of 227 days covers the 70–125 days this plant usually needs.

When to plantMarch 20 – June 15

Harvest: May 29 – November 17
Season vs crop: 227 grow days vs 70–125 needed
Typical frost (last spring – first fall): April 1 – November 13

Potato in Baltimore is a good fit outdoors. The suitable growing window of 227 days covers the 70–125 days this plant usually needs.

Planting conditions

Direct sow
Harvest

Local activity windows for this place and growing method. Blue fill is usually too cold for this plant. Dashed lines are typical last and first frost.

Suitable growing days in a row227

Days to harvest70–125 days from planting

Mar 20 – Jun 15

Direct sow

May 29 – Nov 17

Harvest

Activity	Window	Notes
Direct sow	Mar 20 – Jun 15	Plant outdoors in this window.
Harvest	May 29 – Nov 17	Expected harvest from typical days to harvest.

Direct sow
Harvest

Blue fill is usually too cold for this plant. Dashed lines are typical last and first frost (35 seasons (1991–2025)). Adjust a week or two for your conditions.

Planting and growing across the year

Planting is the sow / plant-out window. Growing is daytime air versus this plant’s ideal (15 – 24 °C59 – 75 °F15 – 24 °C (59 – 75 °F)) and tolerable (7 – 30 °C45 – 86 °F7 – 30 °C (45 – 86 °F)) ranges.

Ideal / plantable
Tolerable
Too cold
Too hot
Outside window

Planting uses sow / plant-out rules; growing shows daytime air against this plant’s ideal and tolerable ranges.

Key dates

Typical last spring frostApril 1

Low-risk last spring frostApril 11

Typical first fall frostNovember 13

Low-risk first fall frostNovember 4

Frost-free days225

Outdoor sow dateMarch 20

Direct sow windowMarch 20 – June 15

Suitable growing windowMarch 20 – November 1 (227 days)

Expected harvestMay 29 – November 17

How these dates are judged

Ideal conditions: Daytime air from 15 – 24 °C59 – 75 °F15 – 24 °C (59 – 75 °F).
Suitable conditions: Daytime air from 7 – 30 °C45 – 86 °F7 – 30 °C (45 – 86 °F).
Last frost and first frost: Typical spring and fall frost dates for Baltimore, shown in the key dates.
Days to harvest: 70–125 days from planting, from typical days to harvest.
Sowing window: Dated sow and harvest bars use frost dates, soil minima, night limits, and last-sow count-back from typical crop timing. Air ratings on the weekly chart colour only weeks inside that same window — see weekly temperatures and windows.

Other plants for Baltimore

Calculated by Plan & Plant. Method. Data 35 seasons (1991–2025).

Frost and suitability dates are typical figures from climate statistics.

Based on 35 years (1991–2025) of ERA5-Land data from Open-Meteo, for an area of about 10 km. Typical dates, not a guarantee.

Dates for Baltimore use ERA5-Land cell 39.29, -76.61. How we calculated this · Algorithm 2026-10-season-10.

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