![H4564 Hefty Brand Corn 4564 95-day Hybrid Header](https://heftyseed.com/wp-content/uploads/2023/10/H4564-1.png)
GDUs to Mid-Pollination: 1200
GDUs to Black Layer: 2380
Pollination for Maturity: Early
Ear Type: Semi-Flex
Cob Color: Red
GDUs to Mid-pollination: 1200
GDUs to Black Layer: 2380
Pollination for Maturity: Early
Ear Type: Semi-Flex
Cob Color: Red
KEY STRENGTHS
Big plant with very strong yield data! Ear flexes well for length. Heavy test weigh! Fast drydown.
WEAKNESSES
Staygreen and Goss’s tolerance are just average.
POSITIONING
The best fit is in zone for maturity and slightly south, as well. The Goss’s tolerance suggests placement in low-pressure Goss’s areas. Handles northern leaf blight well but still responds favorably to foliar fungicide applications, especially for tar spot and gray leaf spot.
AGRONOMIC & DISEASE RATINGS
![2025 Seed Guide Graph_H4564 H4564 Agronomic Chart](https://heftyseed.com/wp-content/uploads/2024/07/Chart2-1.png)
The higher the number, the better the performance or rating.