One of the best tools that you have as gardeners to help us figure out 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.

The earliest that you can plant sunflowers in Edinburg can be figured out by checking out the USDA zone info.

Planting Calendar for Sunflowers

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

Since sunflowers do not do well in cold weather it's important to wait until after the last frost before you can plant them.

The earliest that you can plant sunflowers in Edinburg 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 sunflowers and expect a good harvest is probably September. If you wait any later than that and your sunflowers may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your sunflowers indoors.

Last Frost Date

The average date of last frost is February 15 in Edinburg. In the coldest months of winter you can expect an average low temperature of 25°F.

Just be sure to remember that USDA zone info for Edinburg is not always accurate and the actual date of last frost changes from year to year. Half of the time in Edinburg it frosts late in the year after February 15 so make sure that you are prepared to cover your sunflowers if you have a late frost.

USDA Zone Info for Edinburg

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 Edinburg

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