Catalpa bignonioides 'Nana'
Leaves: Deciduous. Heart-shaped leaves vary from 4-8” long, 3-8” wide, and have a smooth leaf edge. Medium to dark green leaf color. Fall color is insignificant. Leaves sometimes drop while still green. Strong odor when crushed.
Bark/Twigs: Fissured, grayish-brown bark with furrows, sometimes thick and with red-brown scales. Bark is easily damaged and thin when young.
Flowers/Fruit: Rarely flowers. Rarely produces fruits.
Mature size and shape: Small. 15-20’h x 15-20’w. Dwarf, bushy variety with a rounded, uniform, and dense crown that is umbrella or mushroom shaped.
General information/special features: Plant in full sun. Moist, rich soil is preferable. A grafted dwarf cultivar of the Southern catalpa that looks like a large mushroom, globe, or umbrella.
Landscape use and Maintenance: Stands out as a beautiful specimen tree with a unique form. Slow to medium growing rate. Average maintenance. Can be planted near power lines. Weak wooded. Normally grafted at 4-5' above ground.
USDA Hardiness Zone: 5-8
Family/Origin: Bignoniaceae – Catalpa. Of French origin. A grafted dwarf cultivar of the Southern catalpa that looks like a large mushroom, globe, or umbrella.
Campus use: Rare. Large specimen can be found south of Social and Behavioral Science (Bld 25). Only other specimen is on the northwest corner of Gardner Hall (Bld 3).