When can I plant Sweet Sultan in Zone 1a

Before planting it is a good idea to find our USDA Zone info to determine our garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

A common way of getting a good idea when it's the best time to plant sweet sultan is to use the USDA zone info for Zone 1a.


Planting Calendar for Sweet Sultan

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

Since sweet sultan do ok in moderate cold you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant sweet sultan
Possibly ok, but a risky time to plant sweet sultan
Probably not a good time to plant sweet sultan

The earliest that you can plant sweet sultan in Zone 1a is June. However, you really should wait until July 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 July. If you wait any later than that and your sweet sultan may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your sweet sultan indoors.

Last Frost Date

The average date of last frost is June 15 in Zone 1a. In the coldest months of winter we should expect an average low temperature of -60°F.

Remember that USDA zone info for Zone 1a is just an average and our actual date of last frost will vary from year to year. Half of the time in Zone 1a there is a last frost after June 15 so always be ready to protect your sweet sultan if we have a surprise late frost.

USDA Zone Info for Zone 1a

Here is the info for USDA Zone 1a.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-60°F
Highest Expected Low-55°F

This means that on a really cold year, the coldest it will get is -60°F. On most years you should be prepared to experience lows near -55°F.

Plants to Grow in Zone 1a

You may be interested in our other planting guides for Zone 1a.