Northern Catalpa
(Catalpa speciosa)
Date Planted: October 2000
Family: Bignoniaceae
Hardiness: Hardy in the Gorham, ME area; Zone 4 to 8(9)
Mature Dimensions: 40-60' tall, 20-40' wide
Habit: Narrow, open, irregularly shaped crown
Bark: Grayish brown; on mature trunks ranging from scaly to furrowed
Buds: Terminal-absent; lateral-rounded, with overlapping scales; 1/12" long, brown
Leaves: Simple, whorled or opposite, heart-shaped, 6-12" long, 3-8" wide, entire margin. Late to leaf-out, medium green coloring matures to yellowish brown in autumn
Flowers: Perfect, white, 2" by 2", bell-shaped corolla tube is specked with purple, lobes are spreading, with fringed margins. Borne in early-mid June in upright terminal panacles 4-8" long
Fruit:
Green thick-walled capsule matures to brown and persists throughout winter;
8-20" long, bearing many fringed seeds
Pests/Diseases: Few minor; leaf spot, powdery mildew
Reference Pages: Dirr M. 1998. Manual of Woody Landscape Plants. Stipes Publishing Co., Champaign, IL.
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