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Snow Pea Companion Planting
Pisum sativum var. saccharatum
Legume (Fabaceae) -- cool season
1 beneficial companion
1 antagonistic relationship
Good Companions for Snow Pea
LettuceLactuca sativa
BeneficialNutrient SharingSupported
Snow pea nitrogen fixation benefits lettuce. Pea vines on trellises provide dappled shade that extends lettuce harvest by delaying bolting in warm weather.
Trellis snow peas on the south side of lettuce beds for optimal shade in late spring.
Sources
- Intercropping legumes and vegetables for nutrient management -- HortTechnology (2009)
Crops to Avoid Near Snow Pea
OnionAllium cepa
AntagonisticAllelopathyDocumented
Onion root exudates suppress Rhizobium bacteria essential for snow pea nitrogen fixation. Same allium-legume antagonism.
Keep snow peas separated from onion plantings.
Sources
- Allelopathic effects of Allium species on legume Rhizobium symbiosis -- Plant and Soil (1996)