Northern catalpa is primarily used today as a large ornamental shade tree. It is widely planted in urban areas as a street and lawn tree. Conservation uses include plantings in mined-land reclamation projects and shelterbelts.
Where To Grow
The large, heart-shaped leaves and abundant, showy-white spring flowers give catalpa a tropical appearance. Fortunately, the tree is much hardier than it appears and can even be grown in the far western reaches of the state. Catalpas prefer moist, deep, well-drained soil, but adapts to dry or wet soils. It also prefers an open sunny space to partial shade.
Size at Maturity
Tree Height
Tree Spread
40-70′
30-50′
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Show Time Flowering Crab will grow to be about 25 feet tall at maturity, with a spread of 20 feet. It has a low canopy with a typical clearance of 3 feet from the ground and is suitable for planting under power lines.
Amelanchier x grandiflora is a hybrid cross between two species of North American serviceberry, namely, A. arborea (downy serviceberry) and A. laevis (Allegheny serviceberry).
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