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What Grows in Lewiston, ME?

Lewiston in the Androscoggin River valley has slightly warmer conditions than coastal areas.

Zone

USDA 5a

Last frost

May 3

First frost

October 18

Frost-free days

140
Quick Answer

Lewiston is in USDA Zone 5a with about 140 frost-free days, and you can grow tomatoes, kale, potatoes, beets, and more here.

Planting tips for Lewiston

River valley adds warmth. Grow tomatoes in sheltered spots. Focus on cool-season crops.

What to plant, and when

Timing by your frost dates — last frost May 3, first frost October 18.

🌱 Start indoors (pre-frost)

Tomato, Cherry Tomato, Bell Pepper, Chili Pepper, Cucumber, Zucchini, Eggplant, Pumpkin

❄️ Direct-sow early (cool season)

Lettuce, Spinach, Kale, Broccoli, Carrot, Radish, Beets, Onion

☀️ Plant after last frost

Green Beans, Potato, Sweet Potato, Corn, Microgreens, Rhubarb

🍂 Plant in fall

Garlic

What grows well in Lewiston

USDA Zone 5a

Frequently asked questions

What hardiness zone is Lewiston, ME in?

Lewiston, ME is in USDA Hardiness Zone 5a. This drives everything about what you can reliably grow — it maps directly to how cold your winters get.

When is the last frost in Lewiston?

The average last spring frost in Lewiston is around May 3, and the first fall frost is typically October 18. Plan to move tender plants outside after May 3 and have them harvested (or protected) before October 18.

What grows well in Lewiston?

Plenty — Lewiston's USDA Zone 5a climate supports 30+ crops. Some of the easiest and most reliable here are Cherry Tomato, Chili Pepper, Cucumber.

How long is Lewiston's growing season?

Lewiston typically has around 140 frost-free days per year (roughly May 3 to October 18). That's a full season — plenty of time for most annual vegetables plus a succession or fall crop of cool-season greens.

What should I plant first in Lewiston?

Go with fast-maturing crops to get a quick win while the season is short: Microgreens, Arugula, Radish are among the quickest from seed to harvest in Lewiston.

Can I grow vegetables in containers in Lewiston?

Yes — Lewiston's climate is container-friendly for the right crops. Tomato, Cherry Tomato, Bell Pepper all do well in pots, which also lets you start them a little earlier and move them in on cold nights.

When should I start seeds indoors in Lewiston?

For warm-season crops like Tomato, Cherry Tomato, Bell Pepper, start seeds indoors 6–8 weeks before your last frost (around May 3), then transplant after the danger of frost has passed.