Cilantro does well near plants that add nitrogen to the soil.
Nitrogen converts to nitrates which add nutrients to your cilantro.
One good bet is to plant some tall annual flowers.
The Spruce / K. Dave
Bad Cilantro Companion Plants
There are some plants that should not be planted near cilantro.
This makes cilantro a great companion to other plants in yourherb or vegetable garden.
Cilantro also attracts beneficial insects with its unique and pungent fragrance.
The Spruce / K. Dave
Resources for Companion Planting
There are plenty of books on companion planting.
One good comprehensive one is The Complete Guide to Companion Planting by Dale Mayer.
Companion Planting.Franklin Park Conservatory.
The Spruce / K. Dave
