What Grows in Idaho Falls, ID?
Idaho Falls at higher elevation is cooler than Boise with a shorter season demanding cold-hardy approaches.
Zone
Last frost
First frost
Frost-free days
Idaho Falls is in USDA Zone 5b with about 130 frost-free days, and you can grow potatoes, beets, carrots, broccoli, and more here.
Planting tips for Idaho Falls
Famous potato country. Volcanic soil is excellent. Shorter season — focus on fast-maturing varieties.
What to plant, and when
Timing by your frost dates — last frost May 15, first frost September 23.
Tomato, Cherry Tomato, Bell Pepper, Chili Pepper, Cucumber, Zucchini, Eggplant, Pumpkin
Lettuce, Spinach, Kale, Broccoli, Carrot, Radish, Beets, Onion
Green Beans, Potato, Sweet Potato, Corn, Microgreens, Rhubarb
Garlic
What grows well in Idaho Falls
Tomato
Grows well
Cherry Tomato
Grows well
Bell Pepper
Grows well
Chili Pepper
Grows well
Cucumber
Grows well
Zucchini
Grows well
Green Beans
Grows well
Lettuce
Grows well
Spinach
Grows well
Kale
Grows well
Broccoli
Grows well
Carrot
Grows well
Radish
Grows well
Beets
Grows well
Onion
Grows well
Garlic
Grows well
Potato
Grows well
Sweet Potato
Grows well
Corn
Grows well
Peas
Grows well
Cabbage
Grows well
Brussels Sprouts
Grows well
Eggplant
Grows well
Swiss Chard
Grows well
Arugula
Grows well
Microgreens
Grows well
Pumpkin
Grows well
Leek
Grows well
Asparagus
Grows well
Rhubarb
Grows wellFrequently asked questions
What hardiness zone is Idaho Falls, ID in?
Idaho Falls, ID is in USDA Hardiness Zone 5b. This drives everything about what you can reliably grow — it maps directly to how cold your winters get.
When is the last frost in Idaho Falls?
The average last spring frost in Idaho Falls is around May 15, and the first fall frost is typically September 23. Plan to move tender plants outside after May 15 and have them harvested (or protected) before September 23.
What grows well in Idaho Falls?
Plenty — Idaho Falls's USDA Zone 5b climate supports 30+ crops. Some of the easiest and most reliable here are Cherry Tomato, Chili Pepper, Cucumber.
How long is Idaho Falls's growing season?
Idaho Falls typically has around 130 frost-free days per year (roughly May 15 to September 23). That's enough for most annual vegetables if you start warm-season crops indoors and stick to faster-maturing varieties for anything tender.
What should I plant first in Idaho Falls?
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 Idaho Falls.
Can I grow vegetables in containers in Idaho Falls?
Yes — Idaho Falls'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 Idaho Falls?
For warm-season crops like Tomato, Cherry Tomato, Bell Pepper, start seeds indoors 6–8 weeks before your last frost (around May 15), then transplant after the danger of frost has passed.