Flexible Mesquite

Closely related mesquite species may compete for similar resources when planted too closely together

Tamarix produces allelopathic compounds that inhibit germination and growth of many species including legumes like Prosopis

Pistacia species produce tannins and other compounds that can inhibit legume growth

Both aggressive colonizers with allelopathic properties and extensive root systems compete heavily for water

Retama produces alkaloids that can inhibit other legume species growth

Senna produces anthraquinones that can inhibit other legume species