College of Agriculture, Health and Natural Resources

Plant Database

Stewartia ovata

Mountain Stewartia

Theaceae

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Habitat

  • hardy through zone 5
  • native to North Carolina through Florida

Habit and Form

  • a deciduous tree or large shrub
  • 10' to 15' tall
  • equal spread
  • dense, spreading branches
  • medium texture
  • slow growth rate

Summer Foliage

  • alternate leaf arrangement
  • simple, deciduous leaves
  • ovate leaf shape
  • 2" to 5" long
  • 1" to 2.5" wide
  • serrulate leaf margins
  • somewhat pubescent
  • dark green leaf color
  • thick texture

Autumn Foliage

  • orange to red fall color

Flowers

  • white flowers
  • concave petals with crenulated surface
  • 2.5" to 3" across
  • blooms in July

Fruit

  • woody capsule
  • sharply pointed
  • 1" long
  • seeds are winged

Bark

  • gray-brown bark
  • ridged and furrowed
  • stems are red on top and green on underside
  • zigzag stem pattern

Culture

  • difficult to transplant
  • prefers moist, acidic, organic soil
  • partial sun

Landscape Use

  • specimen
  • woods edge
  • border
  • shaded site

Liabilities

  • hard to transplant
  • somewhat slow growing
  • relatively uncommon and expensive to purchase
  • not tolerant of difficult sites

ID Features

  • superposed, sessile buds, 2 to 3 exposed scales
  • brown buds are covered with silky hairs
  • stems are red on top and green on bottom
  • stems with a zigzag pattern

Propagation

  • by cuttings
  • by seed

Cultivars/Varieties

var. grandiflora (also listed as 'Grandiflora') - This is probably the most commonly available form of this native species in commerce. It is notable for its larger flowers and purple stamens.

'Red Rose' - This is a Polly Hill selection out of Martha's Vineyard, MA with red stamens and yellow anthers in the flowers.

'Royal Purple' - Another Polly Hill variation, this plant shows flowers with purple stamens and yellow anthers.

'Scarlet Sentinel' - A hybrid with S. pseudocamellia, this selection from Boston's Arnold Arboretum has an upright, dense habit and white blooms crowned with red-pink stamens. It is sometimes offered by specialty nurseries.

'White Satin' -This Polly Hill clone offers a floral variation with white stamens and yellow anthers.

© 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.