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Can You Grow Watercress in New Hampshire?

US · USDA Zone 5b · zones 4a, 4b, 5a, 5b, 6a

Grows well here

Watercress grows well here if you keep its roots constantly wet — ideal for a shade container garden.

Plant zones

2a–9b

New Hampshire last frost

early April

New Hampshire first frost

late October

Days to harvest

30–60 days

When to plant Watercresses in New Hampshire

Direct sow

Apr 7

Harvest

May 7 – Jun 6

Dates are approximate, based on New Hampshire's average frost dates. Your exact yard may vary by microclimate.

About Watercress

Watercress is a peppery, nutrient-dense aquatic green that loves cool, running water and partial shade — an easy container crop if you keep it constantly wet.

Grow in a container of rich soil kept standing in water, refreshed regularly. Harvest outer leaves often. Prefers cool shade to hot sun.

Full watercress growing guide →

Gardening in New Hampshire

New Hampshire has a humid continental climate. Coastal areas are Zone 5b-6a; northern mountains are Zone 4a-5a. Short growing seasons but productive for cool-season crops and berries.

See what grows well in New Hampshire →

Frequently asked questions

Can you grow Watercress in New Hampshire?

Watercress grows well here if you keep its roots constantly wet — ideal for a shade container garden.

What zone is New Hampshire?

New Hampshire spans USDA Zone 5b (4a, 4b, 5a, 5b, 6a).

When do you plant Watercresses in New Hampshire?

Plant Watercresses Apr 7, harvest May 7 – Jun 6.