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.

One way of estimating when it's the best time to plant nierembergia is to look at the USDA zone info for Lake Mary.

Planting Calendar for Nierembergia

Frost tolerance for nierembergia:	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 nierembergia until after the last frost has passed because they require warm weather.

The earliest that you can plant nierembergia in Lake Mary 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. Any later than that and your nierembergia may not have a chance to really do well. Starting your nierembergia indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

Since the USDA zone info for Lake Mary is just an average the actual date of last frost changes from year to year. Since half of the time in Lake Mary last frost occurs after February 15 be ready to cover your nierembergia if you have a late frost.

USDA Zone Info for Lake Mary

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 Low	25°F
Highest Expected Low	30°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 Lake Mary

You may be interested in your other planting guides for Lake Mary.