SuperSweet Corn Isolation - Knowledgebase Question

Stroudsburg, PA
Question by phenniga
April 26, 1998
I am planning to grow Supersweet yellow corn and 2 other types of sweet yellow corn in my backyard garden. I have read that the supersweet corn requires isolation. Is this an absolute necessity? What are the consequences? What would constitute isolation if it is needed.

The different varieties all have a 14 day difference in their maturation date. ie. 58, 72, 86 days.


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Answer from NGA
April 26, 1998

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The standard recommendation is to have at least 2 weeks between maturity dates, so you should be alright. To add a few extra days, you could stagger the planting times slightly--plant the 58 day variety, plant the 72-day variety a few days later, and the 86-day a few days after that. But you'll probably be fine even if you did plant on all the same day.

Isolation means planting the different varieties at least 250 feet away from each other.

If super-sweet corn varieties are pollinated by standard cultivars, the result can be tough and starchy kernals.

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