Defiant PhR vs Iron Lady
Two purpose-bred blight-resistant hybrids, compared on what they actually resist.
| Defiant PhR | Iron Lady | |
|---|---|---|
| Breeding | F1 hybrid | F1 hybrid |
| Growth habit | Determinate | Determinate |
| Days to maturity | 65-70 | 75-80 |
| Fruit color | red | red |
| Fruit size class | medium | medium |
| Typical weight | 6-8 oz | - |
| Primary uses | slicing | slicing |
| Introduced | - | - |
| Documented resistances | 3 | 3 |
| Saves true from seed | No (F1) | No (F1) |
Disease resistance
Defiant PhR
Late BlightPh-2+Ph-3 · resistant
Early Blightintermediate
Fusarium Wilt of TomatoFF · resistant
Iron Lady
Late BlightPh-2+Ph-3 · resistant
Early Blighttolerant
Septoria Leaf Spottolerant
Traits
Both: F1 Hybrid, Determinate, Red, Medium Slicer, Slicing
Only Defiant PhR
- Early Season
Only Iron Lady
- Mid Season
Origins
Defiant PhR
Johnny's Selected Seeds' answer to the 2009 Northeast late blight epidemic: a determinate mid-size slicer with Ph-2 + Ph-3 resistance, released so gardeners would never again lose everything to one wet August.
Iron Lady
The Cornell-NC State collaboration marketed as the first triple-resistant tomato: late blight, early blight, and septoria tolerance in one determinate package, released through High Mowing Organic Seeds.
More: all comparisons · every tomato variety · filter the full database
Sources & References
Evidence: 5 sources, including 4 independent references.
- Johnny's Selected Seeds catalog · Johnny's Selected Seeds, Seed Catalog
- Vegetable MD Online · Cornell University, Plant Pathology, University or Government
- Evaluation of Late Blight Resistant Tomato Varieties, 2012 · Cornell Long Island Horticultural Research and Extension Center (2012), University or Government
- Evaluation of Late Blight Resistant Tomato Varieties, 2013 · Cornell Long Island Horticultural Research and Extension Center (2013), University or Government
- NC State Fresh-Market Tomato Breeding Program (Mountain series) · North Carolina State University, University or Government