We’ve seen the best results with: Tomatoes, bell peppers, chilli peppers, potatoes (and most nightshades), cucumbers, salad greens, kale, herbs, edible flowers, gourds, melons, squash, beans, peas, and corn. Plants that have fibrous roots system and an above-ground canopy work best. The more creeping the root, the better they'll be able to grow to find the Oya watering pot.