Dense Flowered Phacelia

Phacelia congesta (Dougl. ex Lehm.) Hook.

are eaten by

• Global Biotic Interactions: Leiothlypis luciae (Cooper & JG 1861) (Lucy's Warbler)
• Global Biotic Interactions: Chrysococcyx caprius (Boddaert 1783) (Dideric Cuckoo)
• Global Biotic Interactions: Chrysococcyx caprius (Boddaert 1783) (Dideric Cuckoo)
• Global Biotic Interactions: Chrysococcyx caprius (Boddaert 1783) (Dideric Cuckoo)
• Global Biotic Interactions: Philetairus socius (Latham 1790) (Sociable Weaver)

are host of

• Global Biotic Interactions: Cercospora hydroleae Thirum. & Govindu 1953

are preyed upon by

• Global Biotic Interactions: Tadarida aegyptiaca (E. Geoffroy 1818) (Egyptian Free-tailed Bat)

are visited by

• Global Biotic Interactions: Pseudomasaris texanus (Cresson 1871)
• Global Biotic Interactions: Danaus (Anosia) gilippus Cramer 1775 (Queen)

have flowers visited by

• Global Biotic Interactions: Apis mellifera Linnaeus 1758 (Honey bee)
• Global Biotic Interactions: Amblyscirtes celia
• Global Biotic Interactions: Polistes dorsalis (Fabricius 1775)
• Global Biotic Interactions: Xylocopa virginica (Linnaeus 1771) (Eastern Carpenter Bee)