One of the first steps you take when you are determining your gardening schedule is find your 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 Paso Robles can be read to estimate when to plant argyranthemum.

Planting Calendar for Argyranthemum

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

You can not plant argyranthemum until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant argyranthemum in Paso Robles 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 argyranthemum and expect a good harvest is probably August. If you wait any later than that and your argyranthemum may not have a chance to fully mature. You can get started a little bit earlier by starting your argyranthemum indoors.

Last Frost Date

The average date of last frost is March 15 in Paso Robles. 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 Paso Robles is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Paso Robles you get surprised by a frost after March 15 so just be sure to be ready to protect your argyranthemum if you have a surprise late frost.

USDA Zone Info for Paso Robles

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Paso Robles

You may be interested in your other planting guides for Paso Robles.