One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. 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 Westminster can be reffered to in order to determine when it's the best time to plant geranium.

Planting Calendar for Geranium

Frost tolerance for geranium:	Not tolerant of frost.
When to plant:	After the last frost.

Geranium are not cold tolerant which means that you have to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant geranium in Westminster 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 geranium and expect a good harvest is probably September. Any later than that and your geranium may not have a chance to really do well. Starting your geranium indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is January 31 in Westminster. You can expect an average low temperature of 35°F in the coldest months of winter.

Since the USDA zone info for Westminster is not always accurate the actual date of last frost is different every year. Half of the time in Westminster it frosts late in the year after January 31 so just be sure to be ready to protect your geranium if you have one of those late frosts.

USDA Zone Info for Westminster

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Westminster

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