Northern Catalpa

Catalpa speciosa

Bignoniaceae · broadleaf · introduced

Quick Facts

Height

40–60 ft

Growth Rate

Fast

Light

Full Sun

Soil

Well Drained

Water

Low

Hardiness

Zone Zones 4a–8b

Bloom Time

May to June

Origin

Illinois and Indiana to western Tennessee and northern

Stage	Typical Window	What to Look For
Bud break BBCH 07	Feb 15-Mar 15	Buds swelling and beginning to open; first green tissue visible
Leaf emergence BBCH 11	Mar 1-Apr 1	First leaves fully unfurled on new growth
Bloom start BBCH 61	Jun 1-Jun 30	First open flowers visible; flowers white
Bloom end / petal fall BBCH 69	Jun 15-Jul 15	Last petals falling; flower structures fading
Fruit/seed development BBCH 71	Sep 1-Nov 30	Fruit or seed structures forming; fruit color: brown
Fall color / leaf senescence BBCH 93	Oct 1-Nov 15	Leaves changing color; fall display beginning
Dormancy BBCH 97	Nov 15-Feb 28	Leafless; no active growth; dormant buds set