Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of getting a good idea when you can plant arctotis is to refer to the USDA zone info for Lewistown.

Planting Calendar for Arctotis

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

You can plant arctotis just a bit earlier in the year because they are moderately cold tolerant.

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

The last month that you can plant arctotis and expect a good harvest is probably August. Any later than that and your arctotis may not have a chance to really do well. Starting your arctotis indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is May 15 in Lewistown. It might get as low as -30°F during the coldest months of winter.

Remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Lewistown and it changes from year to year. Since half of the time in Lewistown it frosts late in the year after May 15 be ready to protect your arctotis if you have one of those late frosts.

USDA Zone Info for Lewistown

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°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 -25°F.

Plants to Grow in Lewistown

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