I am trying to grow heirloom tomatoes, but most of them are not surviving. Whats the deal?
Heirloom varieties often lack resistance to today’s common diseases and pests, and many came from climates and soils very different from ours. Crop rotation to non-host species helps break the life cycle of pathogens, as does soil solarization. Diseased plant material, contrary to our leave-it-there mulching/composting policy, goes into the trash (not the green waste!). Remove all effected tissues from the site, and remove any roots along with the stems.