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.

In Thomson you can figure out when to plant coleus by reviewing the USDA zone info.

Planting Calendar for Coleus

Frost tolerance for coleus:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

You really shouldn't plant coleus until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant coleus in Thomson is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant coleus and expect a good harvest is probably August. You probably don't want to wait any later than that or else your coleus may not have a chance to grow to maturity. If you are starting your coleus indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is March 15 in Thomson. It might get as low as 10°F during the coldest months of winter.

Always keep in mind that USDA zone info for Thomson is just an average and the actual date of last frost is different every year. Half of the time in Thomson last frost occurs after March 15 so make sure that you are prepared to cover your coleus if you have one of those late frosts.

USDA Zone Info for Thomson

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Thomson

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