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Northern Catalpa Seedling

Northern Catalpa Seedling

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Species: Catalpa speciosa

History: Northern Catalpa is native to the midwestern US where it was cultivated starting in the 1750s due to its resistance to rotting. This made it useful as fence posts and, rather unsuccessfully, as railroad ties. This tree has since expanded far beyond its original range as a commonly planted ornamental tree.

Why We Grow It: Catalpas make lovely ornamental trees, featuring large, heart-shaped leaves and twisting trunks. To further the visual appeal, they bloom annually with large, white flowers which turn into dangling bean pods. 

Canadian Hardiness Zone: 4

Soil Preference: Tolerant of most soils and moisture levels

Growth Habits and Disease Resistance: Moderate to fast growth rate, reach about 40-60ft at maturity. Mildew and Leaf Spot are not major issues but Catalpas can get Verticillium Rot.

Sun/Shade: Partial to full sun (at least 4 hours of full sun daily)

Pollination: Self-pollinating

Flowering Time: May-June, takes seven years to flower

Ripens: Bean pods (inedible) present from mid-summer to mid-winter

Recommended Use: Ornamental

Height above soil line:  30-45cm, or 60cm+

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