One of the best tools that you have as gardeners to help us determine 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 guara in Castle Rock can be figured out by using the USDA zone info.

Planting Calendar for Guara

Frost tolerance for guara:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's a bad idea to plant guara until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant guara in Castle Rock is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant guara and expect a good harvest is probably August. Any later than that and your guara may not have a chance to grow to maturity. Starting your guara indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Castle Rock. You should expect an average low temperature of -15°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Castle Rock is an average and the actual date of last frost will vary from year to year. Half of the time in Castle Rock last frost occurs after April 15 so make sure that you are ready to protect your guara in the event of one of those late frosts.

USDA Zone Info for Castle Rock

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Castle Rock

You may be interested in your other planting guides for Castle Rock.