Indian bean tree (Catalpa bignonioides)

Photo: KENPEI, CC BY-SA 3.0 · source

Pruning guide · Broadleaf tree

Indian bean tree: when and how to prune

Catalpa bignonioides

Indian bean tree is best pruned in February–March.

Key facts
Pruning monthsFebruary–March
Nesting season (15 March–15 August)Take care in March
FloweringJuly
Good for bees, butterflies and birdsYes, for bees
Native to BelgiumNo, planted

Indian bean tree: when to prune it?

At the end of winter (February–March), just before its late leafing-out.

Prune while dormant, from November to March, but not in freezing weather.

What else to prune in those months? February · March

Indian bean tree: how to prune it?

  1. Tolerates hard pruning: on the mophead form you can cut the branches back every few years to short stubs on the head.
  2. Prune a tree little: remove dead, crossing and low branches.
  3. Cut back twigs killed by winter frost to healthy wood.

How much to cut, and how often?

  • One pruning period a year: February–March.
  • Never remove more than about a quarter of the crown at once. Better a little every year.

What does it mean for wildlife?

  • Pruning in March can fall in the nesting season (15 March–15 August). Check carefully for nesting birds first: disturbing an active nest is against the law.
  • Indian bean tree flowers in July, when it attracts bees.
  • Prunings can go on a dead hedge or brash pile in a corner of the garden: shelter for hedgehogs, wrens and insects.

Common mistakes

  • Clipping without first checking for nesting birds.
  • Leaving a stub or sawing flush with the trunk: cut just outside the branch collar.

Caution: Don’t let shoots grow below the head of a grafted mophead: they come from the rootstock and grow into an ordinary Indian bean tree.

Nearby: related pruning guides

Similar to: Difference from foxglove tree · Difference from common lilac · Difference from trumpet vine · Difference from large-leaved lime

Plant profile: Indian bean tree · Pruning calendar and basic rules

This guide is compiled from the Bladwijzer plant profile and pruning calendar.

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