Pocatello Greenhouse
Northern catalpa
Northern catalpa
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Northern Catalpa is a tall shade tree with large, heart-shaped leaves and gorgeous, fragrant white flowers. Long, cigar-like pods persist through winter. This tree could have been the inspiration for the story Jack and the Bean Stalk.
Category: Shade Tree
Botanical name: Catalpa speciosa
Height: 40 to 60
Width: 30-45
Water requirements: Medium
Sunlight: Full sun
Lowest hardiness zone for growth: 4
Shape: rounded
Growth rate: medium to fast
Bloom time: May to June
Level of maintenance: Medium
Potential diseases: Aside from Verticillium Wilt, Northern Catalpa can be host to other diseases and insects that are the horticultural equivalent of acne and the common cold. Leaf spot, powdery mildew, and twig blight are a few minor, mostly cosmetic diseases that can afflict Northern Catalpa during periods of stress. The already-mentioned Catalpa Sphinx Moth can defoliate the tree in times of high pressure, but the tree will rebound the next year without lasting damage.
Category: Shade Tree
Botanical name: Catalpa speciosa
Height: 40 to 60
Width: 30-45
Water requirements: Medium
Sunlight: Full sun
Lowest hardiness zone for growth: 4
Shape: rounded
Growth rate: medium to fast
Bloom time: May to June
Level of maintenance: Medium
Potential diseases: Aside from Verticillium Wilt, Northern Catalpa can be host to other diseases and insects that are the horticultural equivalent of acne and the common cold. Leaf spot, powdery mildew, and twig blight are a few minor, mostly cosmetic diseases that can afflict Northern Catalpa during periods of stress. The already-mentioned Catalpa Sphinx Moth can defoliate the tree in times of high pressure, but the tree will rebound the next year without lasting damage.
