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When to Plant Red Hot Pokers in Johnston, IA

One of the best tools that you have as gardeners to help us estimate 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.

By checking out the USDA zone info for Johnston it's possible to estimate when it's the best time to plant red hot pokers.

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Planting Calendar for Red Hot Pokers

Frost tolerance for red hot pokers: Very tolerant of frost.
When to plant: Up to 7 weeks before last frost.

Red Hot Pokers are very cold tolerant which means that you can get them planted much earlier than other frost tender plants.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant red hot pokers
Possibly ok, but a risky time to plant red hot pokers
Probably not a good time to plant red hot pokers

The earliest that you can plant red hot pokers in Johnston 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 red hot pokers and expect a good harvest is probably September. If you wait any later than that and your red hot pokers may not have a chance to fully mature. If you are starting your red hot pokers 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 April 15 in Johnston. You should expect an average low temperature of -20°F in the coldest months of winter.

It's important to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Johnston and it changes from year to year. Half of the time in Johnston there is a last frost after April 15 so make sure that you are ready to cover your red hot pokers if you have one of those late frosts.

USDA Zone Info for Johnston

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 Johnston

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