The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can determine when it's possible to plant arctotis in Roma by referring to the USDA zone info.

Planting Calendar for Arctotis

Frost tolerance for arctotis:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since arctotis do well in moderate cold you can plant them a little bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant arctotis in Roma is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant arctotis and expect a good harvest is probably October. Any later than that and your arctotis may not have a chance to grow to maturity. If you are starting your arctotis indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Roma. It might get as low as 25°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Roma is not always accurate and the actual date of last frost changes from year to year. Half of the time in Roma it frosts late in the year after February 15 so make sure that you are prepared to protect your arctotis in the event of a late frost.

USDA Zone Info for Roma

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 Roma

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