One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to figure out when it's the best time to plant sweet sultan by referring to the USDA zone info for Columbia City.

Planting Calendar for Sweet Sultan

Frost tolerance for sweet sultan:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Sweet Sultan tend to make it in a tiny bit of cold which means that you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant sweet sultan in Columbia City 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 sweet sultan and expect a good harvest is probably August. Any later than that and your sweet sultan may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your sweet sultan indoors.

Last Frost Date

The average date of last frost is April 15 in Columbia City. You should expect an average low temperature of -15°F in the coldest months of winter.

Keep in mind that USDA zone info for Columbia City is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Columbia City there is a last frost after April 15 be ready to cover your sweet sultan if you have a surprise late frost.

USDA Zone Info for Columbia City

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°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 -10°F.

Plants to Grow in Columbia City

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