Stunt in sweet corn is caused by a bacterial-like organism known as spiroplasma, which is transmitted from infected corn to healthy corn by corn leafhoppers, small insects that feed on corn. The bacteria overwinters in adult leafhoppers, and the pests infect corn in early spring.

What can affect corn?

• 1) Moisture extremes. …
• 2) Delayed field operations. …
• 3) Soil Conditions. …
• 4) Weed pressures. …
• 5) Wind damage / downed corn.

Why did my corn not grow tall?

If you’ve planted sweet corn and find that it doesn’t grow tall, it could be due to heat stress or lack of water. Other reasons why your corn may not be growing tall are soil compaction, insufficient light, and extremely cold temperatures.