Garden Near Catalpa: Bean Pods, Big Leaves and Shade
A garden near catalpa has to plan for pods, flowers plus big leaves falling through the year. Nebraska Forest Service says flowers, long seedpods plus seeds drop from spring through winter near the tree.
The short answer
A garden near catalpa gets dense shade plus steady litter. UNH Extension says the huge leaves cast dense shade so not much grows under the tree. UF says the pods reach up to 2 feet long. Flowers drop into shrubs, groundcovers or turf without much trouble. Give the tree room away from beds.
How much shade does catalpa cast?
Nebraska Forest Service lists northern catalpa at 40 to 70 feet tall with a 30 to 50 foot spread. UF says it grows in a loose oval about 60 feet tall. UNH says the huge broad leaves cast deep shade. NC State says the foliage is very large plus turns yellow in fall, then black.
| Option | What it does | Source |
|---|---|---|
| 40 to 70 feet | Mature height | Catalpa |
| Huge leaves | Dense shade | The northern catalpa tree |
| Fall | Yellow then black | Catalpa speciosa (northern catalpa) |
What falls from a catalpa?
UF says the fruit is a long pod up to 2 feet long that looks like a string bean. Flowers make a brief slimy mess on paths but are no problem falling into shrubs, groundcovers or turf, UF adds. UNH says the tree sheds twigs plus branches, then blossoms, then leaves in fall, with pods dropping in spring. UNH also notes a sticky drip onto cars parked below.
Bean pods: up to 2 feet. Flowers: short mess. Twigs: year round.
Where should beds go near catalpa?
Nebraska Forest Service says to give the tree ample space from buildings plus fences. Its brittle wood can break in wind or ice. UF says leaves may scorch plus drop in dry summers. NC State says catalpa takes full sun or part shade plus prefers moist loam rich in organic matter. Set beds past the drip line where light reaches.
Ample space: from structures. Brittle wood: wind or ice breaks. Moist loam: preferred soil.
Troubleshooting
Nothing grows under the tree? UNH says the dense shade limits growth.
Pods across the lawn? UF calls them a minor litter problem.
Sticky film on cars? UNH notes the tree drips a sticky residue.
Kind Seed Co shares these plant notes for growers of all kinds. For more on site planning see garden microclimates for cannabis and growing cannabis near trees. Read planning an outdoor cannabis garden layout for bed layout. See mulch for cannabis for bed cover.
Sources
- Catalpa, northern, Nebraska Forest Service, University of Nebraska
- Catalpa spp.: catalpa (ST130), UF/IFAS Extension
- The northern catalpa tree, University of New Hampshire Extension
- Catalpa speciosa (northern catalpa), NC State Extension Gardener Plant Toolbox
FAQ
Are catalpa pods messy?
UF says the long pods can be a slight litter problem. Nebraska Forest Service says they fall through winter.
How big does a catalpa get?
Nebraska Forest Service lists 40 to 70 feet tall with a 30 to 50 foot spread.
What plants grow under catalpa?
UNH says not much grows under the dense shade. UF says flowers fall into shrubs, groundcovers or turf without trouble.
What color do catalpa leaves turn?
NC State says the leaves turn yellow in fall then eventually black.
How far should catalpa be from a building?
Nebraska Forest Service says to give ample space from buildings plus fences.
