The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can estimate when it's possible to plant sweet williams in Lehi by referring to the USDA zone info.

Planting Calendar for Sweet Williams

Frost tolerance for sweet williams:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since sweet williams are moderately cold tolerant you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant sweet williams in Lehi is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant sweet williams and expect a good harvest is probably September. Any later than that and your sweet williams may not have a chance to grow to maturity. Starting your sweet williams indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on April 15 in Lehi. It might get as low as -5°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Lehi is not always accurate and the actual date of last frost changes from year to year. Half of the time in Lehi there is a last frost after April 15 so make sure that you are ready to cover your sweet williams in the event of a surprise late frost.

USDA Zone Info for Lehi

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Lehi

You may be interested in your other planting guides for Lehi.