About this guild
Tomatoes, peppers, potatoes, eggplants, and chillies share the Solanaceae family — similar warm-season needs but also shared pests and blight risk. Use the matrix to separate bad neighbours like fennel and manage potato–tomato distance.
NZ note
Psyllid and blight pressure is real in humid regions — spacing matters.
Plants in Nightshade Guild
14 species — tap for individual companion guides and spacing.
nightshade
Bird's Eye Chili
18-24" spacing
nightshade
Cayenne Pepper
18-24" spacing
nightshade
Cherry Tomato
18-24" spacing
nightshade
Eggplant
24-36" spacing
nightshade
Ground Cherry
24-36" spacing
nightshade
Habanero
24-30" spacing
nightshade
Jalapeño
18-24" spacing
nightshade
Poroporo (NZ)
36-48" spacing
nightshade
Potato
12-15" spacing
nightshade
Serrano Pepper
18-24" spacing
nightshade
Sweet Pepper
18-24" spacing
nightshade
Thai Chili
18-24" spacing
nightshade
Tomatillo
24-36" spacing
nightshade
Tomato
24-36" spacing
Planting tips
- Rotate nightshades — avoid tomato after potato in the same bed.
- Basil and marigolds are classic tomato allies; see cited pairs in the matrix.
- Chillies and sweet peppers can share a bed with good air flow.
Use the compatibility matrix
Filter to Nightshade Guild to see green (beneficial), red (incompatible), and grey (neutral) for every pair. Desktop: hover cells. Mobile: tap for details and sources.
- Filter — guild pre-selected in the matrix URL
- Compare — row × column shows each relationship
- Plan — share the URL or download the PDF guide