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 USDA zone info for Robstown can be reviewed to figure out when to plant napa valley fern.

Planting Calendar for Napa Valley Fern

Frost tolerance for napa valley fern:	Not tolerant of frost.
When to plant:	After the last frost has passed.

You really shouldn't plant napa valley fern until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant napa valley fern in Robstown 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 napa valley fern and expect a good harvest is probably September. You probably don't want to wait any later than that or else your napa valley fern may not have a chance to fully mature. You can get started a few weeks earlier by starting your napa valley fern indoors.

Last Frost Date

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

It's important to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Robstown and it is different every year. Half of the time in Robstown you get a frost after February 15 so make sure that you are prepared to protect your napa valley fern if you have a surprise late frost.

USDA Zone Info for Robstown

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 Robstown

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