Plant Family

Rosaceae

69 plants in database

The temperate fruit family — but also the family with the heaviest shared pest pressure in the database. Fire blight, codling moth, brown rot, and plum curculio all move freely between members, so clustering Rosaceae species amplifies pest problems. Diversify with Elaeagnaceae nitrogen fixers like goumi as understory companions — they fix nitrogen and do not share Rosaceae pest pressure. Alliums planted beneath fruit trees suppress fungal disease at the root zone. Most cross freely — seed saving requires isolation.