Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Rio Grande City can be looked at to determine when it's the best time to plant echinacea.

Planting Calendar for Echinacea

Frost tolerance for echinacea:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Echinacea tend to make it in very little cold which tells us that you can plant them slightly earlier in the year than more sensitive plants.

The earliest that you can plant echinacea in Rio Grande City is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant echinacea and expect a good harvest is probably September. Any later than that and your echinacea may not have a chance to really do well. You can get started a few weeks earlier by starting your echinacea indoors.

Last Frost Date

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

Always keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Rio Grande City and it can change quite a bit from year to year. Since half of the time in Rio Grande City it frosts late in the year after February 15 be ready to cover your echinacea if you have a surprise late frost.

USDA Zone Info for Rio Grande City

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 Rio Grande City

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