When to Plant Coleus in Simi Valley, CA

One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of determining when to plant coleus is to check out the USDA zone info for Simi Valley.


Planting Calendar for Coleus

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

You should not plant coleus until after the last frost when the weather gets warmer because they do not do well in cold weather.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant coleus
Possibly ok, but a risky time to plant coleus
Probably not a good time to plant coleus

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

The last month that you can plant coleus and expect a good harvest is probably September. You probably don't want to wait any later than that or else your coleus may not have a chance to grow to maturity. You can get started a little bit earlier by starting your coleus indoors.

Last Frost Date

The average date of last frost is February 15 in Simi Valley. It might get as low as 25°F during the coldest months of winter.

Always keep in mind that USDA zone info for Simi Valley is an average and the actual date of last frost will vary from year to year. Half of the time in Simi Valley you get a frost after February 15 so make sure that you are prepared to cover your coleus if you have a late frost.

USDA Zone Info for Simi Valley

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)February 15
Average Date of First Frost (fall)December 15
Lowest Expected Low25°F
Highest Expected Low30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Simi Valley

You may be interested in your other planting guides for Simi Valley.