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

In Groves you can determine when it's the best time to plant nierembergia by using the USDA zone info.

Planting Calendar for Nierembergia

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

You really shouldn't plant nierembergia until after the last frost because they require warm weather.

The earliest that you can plant nierembergia in Groves 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 nierembergia and expect a good harvest is probably September. If you wait any later than that and your nierembergia may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your nierembergia indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Groves. It might get as low as 20°F during the coldest months of winter.

Since the USDA zone info for Groves is just an average the actual date of last frost will vary from year to year. Half of the time in Groves you get a frost after February 15 so just be sure to be ready to protect your nierembergia in the event of a late frost.

USDA Zone Info for Groves

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Groves

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