Goat's Rue

Herbaceous

Goat's Rue

Galega officinalis

Also known as: Professor-weed, French lilac

Herbaceous Fabaceae Nitrogen FixerMedicinalWildlife AttractorAnimal Fodder
Hardiness Zone
4-8
Ideal Temp
55–78°F
Survives Down To
-30°F
Life Cycle
Perennial

Goat's rue is a tall perennial legume with bluish flowers and a résumé that includes “livestock poison if mishandled” and “historical galactagogue folklore.” It fixes nitrogen with rhizobia suited to the genus—not a generic bean inoculant guess. Several regions list it as invasive weed; subtropical and tropical Americas heat can stress it compared to cooler strongholds. Grow as a managed hedgerow experiment, not a salad bar. ☀️💧 Sun and Water Requirements: - Full sun to light shade; best vigor in cooler summers. - Moist, fertile, well-drained soils; tolerates wetter spots better than drought deserts. ✂️ Methods to Propagate: - Seeds: scarify and soak; germination improves with treatment. - Division in spring for known lines. 🌾 Harvest notes: - Not a casual harvest crop—toxicity profile means hands-off unless you are following expert guidance for specific prepared uses.

Good Neighbors
  • Apple
  • Willow
  • Wet meadow forbs
Cautions
  • Pastures with naive grazers and no management
  • Letting seed spread where listed as invasive
Known Threats — Organic Solutions Only
Aphids
Aphidoidea
Banded Cucumber Beetle
Diabrotica balteata
Bean Aphid
Aphis fabae
Bean Leaf Beetle
Cerotoma trifurcata
Bean Weevil
Acanthoscelides obtectus
Brown Marmorated Stink Bug
Halyomorpha halys
Corn Earworm
Helicoverpa zea
Cowpea Curculio
Chalcodermus aeneus
Fall Armyworm
Spodoptera frugiperda
Fusarium Wilt
Fusarium oxysporum
Ganoderma Butt Rot
Ganoderma spp.
Harlequin Ladybird
Harmonia axyridis
Kudzu Bug
Megacopta cribraria
Locust Borer
Megacyllene robiniae
Locust Leaf Miner
Odontota dorsalis
Lubber Grasshopper
Romalea microptera
Pea Moth
Cydia nigricana
Pea Weevil
Bruchus pisorum
Pythium Root Rot
Pythium spp.
Reniform Nematode
Rotylenchulus reniformis
Root Aphid
Pemphigus spp.
Root Rot
Various (e.g., Pythium spp., Phytophthora spp., Rhizoctonia spp., Fusarium spp.)
Soybean Looper
Chrysodeixis includens
Spittlebugs
Cercopidae
Spotted Cucumber Beetle
Diabrotica undecimpunctata howardi
Stink Bug
Pentatomidae
Striped Cucumber Beetle
Acalymma vittatum
Velvetbean Caterpillar
Anticarsia gemmatalis
White Rot
Sclerotinia sclerotiorum
Whiteflies
Aleyrodidae