USDA hardiness zone lookup
Logan, UT — USDA Zone 5b
Logan, Utah · 137-day growing season
Frost dates and growing season in Logan
| USDA hardiness zone | Zone 5b |
|---|---|
| Average last spring frost | May 14 |
| Average first fall frost | September 28 |
| Growing season length | ~137 days |
| Temperature range (F) | -20 to -10°F |
| Temperature range (C) | -29 to -23°C |
All of Logan's mapped ZIP codes fall in the same hardiness band, Zone 5b.
These are 50%-probability averages modeled from Logan's USDA hardiness zone and regional climate normals — not a single-station reading. In a typical year the last spring frost will have passed by May 14, but a colder-than-average year can run 1-2 weeks later. Plant tender crops (tomatoes, peppers, basil) once both soil and night temperatures are consistently warm — a thermometer beats the calendar.
Growing season in Logan
Logan, Utah sits in USDA Zone 5b, with roughly 137 frost-free days between an average last spring frost around May 14 and a first fall frost around September 28. That is a standard temperate season — most common vegetables finish comfortably, and a single main planting plus one succession round works well.
What grows in Logan
Logan falls in USDA Zone 5b, so the same hardiness constraints apply as the full Zone 5 guide. Vegetables, herbs, and fruit trees rated to Zone 5b (or hardier) will overwinter here in a typical year.
- Tomatoes (full range of varieties)
- Peppers
- Eggplant
- Squash, melons, cucumbers
- Beans (bush + pole)
- Sweet corn
- Apples, pears, plums
- Cherries (sweet + sour)
- Blueberries, raspberries
- Garlic
What to plant in Logan this week
Logan's last frost is around May 14. This is the spring transplant window — start tomatoes and peppers indoors if you haven't, and direct-sow cold-tolerant crops now.
- When to plant tomatoes in zone 5
- When to plant peppers in zone 5
- When to plant basil in zone 5
- When to plant bush beans in zone 5
- When to plant cucumbers in zone 5
Full planting calendar for Logan
Crop-by-crop sowing, transplant, and harvest dates calibrated to zone 5 averages:
- When to plant tomatoes in zone 5
- When to plant peppers in zone 5
- When to plant basil in zone 5
- When to plant garlic in zone 5
- When to plant lettuce in zone 5
- When to plant bush beans in zone 5
- When to plant cucumbers in zone 5
- When to plant summer squash in zone 5
- When to plant peas in zone 5
- When to plant carrots in zone 5
ZIP codes in Logan
Drill down to the precise frost window and planting calendar for a specific ZIP in Logan:
Local microclimate notes
Zone tables give you the average — but Logangardens vary. South-facing walls and paved areas can run a full half-zone warmer than the published rating. Low-lying spots, frost pockets, and shaded north sides can run colder. If you've gardened here a few seasons, your own frost record — the last time you actually got frost damage — beats any national average.
Source and methodology
Hardiness zone from the USDA Plant Hardiness Zone Map (2023 revision). Frost-date and growing-season figures are modeled from Logan's USDA hardiness zone and regional NOAA 1991-2020 climate normals — zone-level estimates, not a per-station record, so treat them as planning guidance and confirm against your own local frost history. Crop recommendations draw on US Cooperative Extension references, curated by the Growli editorial team. Last reviewed June 2026.
Other cities in Utah
- Clearfield, UT — USDA Zone 6b
- Midvale, UT — USDA Zone 7a
- Ogden, UT — USDA Zone 7a
- Orem, UT — USDA Zone 6b
- Provo, UT — USDA Zone 6b
- Saint George, UT — USDA Zone 8b
- Salt Lake City, UT — USDA Zone 7a
- Sandy, UT — USDA Zone 6b
- South Jordan, UT — USDA Zone 6b
- West Jordan, UT — USDA Zone 7a
- West Valley City, UT — USDA Zone 7a
- All of Utah by zone