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.

In South Sioux City you can determine when to plant candytuft by using the USDA zone info.

Planting Calendar for Candytuft

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

Since candytuft are moderately cold tolerant you can plant them a little earlier in the year than other frost tender plants.

The earliest that you can plant candytuft in South Sioux City 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 candytuft and expect a good harvest is probably September. Any later than that and your candytuft may not have a chance to grow to maturity. If you are starting your candytuft indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In South Sioux City the average date of last frost happens on April 15. It might get as low as -20°F during the coldest months of winter.

Remember that USDA zone info for South Sioux City is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in South Sioux City last frost occurs after April 15 be ready to cover your candytuft in the event of a late frost.

USDA Zone Info for South Sioux City

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in South Sioux City

You may be interested in your other planting guides for South Sioux City.