College of Agriculture, Health and Natural Resources

Plant Database

Heptacodium miconioides

Seven-son Flower

Caprifoliaceae

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Habitat

  • native to China
  • zone 5

Habit and Form

  • a deciduous large shrub or small tree
  • oldest plants in the United States are 15' to 20' tall
  • multi-stemmed or single-stemmed
  • upright branching and growth
  • develops a loose, rounded or irregular crown

Summer Foliage

  • simple, deciduous leaves
  • opposite leaf arrangement
  • leaves are 2" to 6" long and about half as wide
  • rounded base and acuminate tip
  • dark green mature color
  • foliage is of high quality

Autumn Foliage

  • poor
  • yellow-green

Flowers

  • fragrant white small flowers
  • borne in 6" long panicles
  • bloom time is late August and September
  • showy and attract butterflies

Fruit

  • capsules that can retain sepals
  • sepals change from green to burgundy an last up to 3 weeks
  • sepals are as showy as the flowers

Bark

  • exfoliating tan bark
  • bark comes off in strips and is reminiscent of crape myrtle or beautybush
  • attractive

Culture

  • full sun is best
  • soil adaptable, but prefers a moist, well-drained fertile soil
  • easily transplanted and grown
  • may need some pruning to tame errant shoots

Landscape Use

  • specimen
  • in small groups
  • for late summer flowers
  • for colored sepals in fall
  • for attractive bark

Liabilities

  • a new plant and therefore a bit hard to find for sale
  • stem dieback possibly due to canker
  • many plants especially those in shade do not seem to develop retained sepals
  • buck deer like to rub their antlers on the trunks

ID Features

  • exfoliating tan bark
  • late summer white flowers
  • red sepals in fall
  • leaves have 3 parallel main veins

Propagation

  • by cuttings
  • by seed

Cultivars/Varieties

This plant was introduced into the United States in the 1980 and is therefore still uncommon. Cultivars have not yet been selected.

© Copyright Mark H. Brand, 1997-2015.

The digital materials (images and text) available from the UConn Plant Database are protected by copyright. Public use via the Internet for non-profit and educational purposes is permitted. Use of the materials for profit is prohibited.

Citation and Acknowledgements: University of Connecticut Plant Database, https://plantdatabase.uconn.edu/, Mark H. Brand, Department of Plant Science and Landscape Architecture, Storrs, CT 06269-4067 USA.