One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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.

It's possible to figure out when it's possible to plant lisianthus by referring to the USDA zone info for Crystal City.

Planting Calendar for Lisianthus

Frost tolerance for lisianthus:	Not tolerant of frost.
When to plant:	After the last frost.

You should not plant lisianthus until after all chance of frost has passed because they require warm weather.

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

Last Frost Date

The average date of last frost is February 15 in Crystal City. It might get as low as 20°F during the coldest months of winter.

Always keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Crystal City and it can change quite a bit from year to year. Half of the time in Crystal City you get a frost after February 15 so make sure that you are ready to cover your lisianthus if you have a late frost.

USDA Zone Info for Crystal City

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 Crystal City

You may be interested in your other planting guides for Crystal City.