Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Upland you can figure out when it's possible to plant argyranthemum by reviewing the USDA zone info.

Planting Calendar for Argyranthemum

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

You should not plant argyranthemum until after all chance of frost has passed because they are not cold tolerant.

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

Last Frost Date

The average date of last frost is January 31 in Upland. You should expect an average low temperature of 30°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Upland is just an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Upland you get a frost after January 31 be ready to cover your argyranthemum in the event of one of those late frosts.

USDA Zone Info for Upland

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Upland

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