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 figuring out when to plant bells of ireland is to consult the USDA zone info for Harlingen.

Planting Calendar for Bells of Ireland

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

You can plant bells of ireland slightly earlier in the year because they do ok in moderate cold.

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

Last Frost Date

In Harlingen the average date of last frost happens on February 15. You should expect an average low temperature of 25°F in the coldest months of winter.

Always keep in mind that USDA zone info for Harlingen may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Harlingen you get surprised by a frost after February 15 so make sure that you are prepared to cover your bells of ireland in the event of a late frost.

USDA Zone Info for Harlingen

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 Harlingen

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