![H4964 Hefty Brand Corn 4964 99-day Hybrid Header](https://heftyseed.com/wp-content/uploads/2023/11/H4964.png)
![SmartStax Pro logo](https://heftyseed.com/wp-content/uploads/2024/07/smartstaxprologo.png)
GDUs to Mid-pollination: 1220
GDUs to Black Layer: 2360
Pollination for Maturity: Early
Ear Type: Semi-Flex
Cob Color: Red
GDUs to Mid-Pollination: 1220
GDUs to Black Layer: 2360
Pollination for Maturity: Early
Ear Type: Semi-Flex
Cob Color: Red
KEY STRENGTHS
SmartStax® PRO hybrid with the industry’s best corn rootworm protection! Taller plant with very good stalks and roots. Excellent ear flex, especially for girth.
WEAKNESSES
Average test weight. Needs foliar fungicide to help with gray leaf spot and southern rust.
POSITIONING
Exciting product with great rootworm protection. Place on average to better ground. Responds to early-season fertility. Best performance will be in its maturity zone.
AGRONOMIC & DISEASE RATINGS
![2025 Seed Guide Graph_H4964 H4964 Agronomic Chart](https://heftyseed.com/wp-content/uploads/2024/07/Chart-3.png)
The higher the number, the better the performance or rating.