The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By referring to the USDA zone info for Keller you should be able to estimate when it's a good idea to plant mecardonia.

Planting Calendar for Mecardonia

Frost tolerance for mecardonia:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's probably not a good idea to plant mecardonia until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant mecardonia in Keller 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 mecardonia and expect a good harvest is probably August. If you wait any later than that and your mecardonia may not have a chance to really do well. You can get started a couple of weeks earlier by starting your mecardonia indoors.

Last Frost Date

On average the last frost is on March 15 in Keller. In the coldest months of winter you should expect an average low temperature of 10°F.

Since the USDA zone info for Keller is an average the actual date of last frost will vary from year to year. Since half of the time in Keller there is a last frost after March 15 be ready to cover your mecardonia if you have one of those late frosts.

USDA Zone Info for Keller

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 Keller

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