Oxydendrum arboreum aka Sourwood

Taxonomy

Oxydendrum arboreum, also known as the sourwood or sorrel tree, is the only species in its genus and belongs to the Ericaceae family. It is native to eastern North America, ranging from southern Pennsylvania to northwest Florida and southern Illinois. The tree can commonly be found in oak-heath forests of the lower chain of the Appalachian Mountains. This deciduous small tree can grow up to 30 feet tall with a trunk diameter of 8 to 12 inches. Its gray bark has a reddish tinge and is deeply furrowed and scaly. The branchlets start off as light yellow-green but later turn reddish-brown. The wood is heavy, hard, and close-grained, with a high polish and specific gravity of 0.7458 and density of 46.48 lb/cu ft. The winter buds are dark red and partly immersed in the bark, with inner scales that enlarge when spring growth begins. The leaves are alternate, oblong to oblanceolate, finely toothed, and sour to the taste. They are four to seven inches long, 1.5 to 2.5 inches wide, and wedge-shaped at the base with a conspicuous midrib and feather-veined. When they emerge from the bud, they are bronze-green and smooth, but when fully grown, they are dark green and shiny above and pale and glaucous below. In autumn, they turn bright scarlet. The petioles are long and slender, with stipules wanting. In mid-summer, small, white, urn-shaped flowers mature on panicles and mature in the fall.

Common names

Sourwood, Sorreltree, Sorrel Tree, Oxydendrum

How to care for Sourwood

Difficulty

With its straightforward care requirements, Sourwood is a hassle-free plant that anyone can enjoy.

Water

Sourwood should be watered regularly, allowing the soil to dry out between waterings.

Soil

Sourwood loves a well-draining soil. Perlite and vermiculite help with drainage, while coco coir adds organic matter, so a good potting soil mix will have all three. You can improve store-bought soil by adding some perlite to it.

Lighting

To ensure optimal growth, the Sourwood prefers bright indirect light for 6-8 hours each day. Insufficient light can result in slow growth and leaf drop, so it's important to find a well-lit location for this plant. Place it near a window, within a distance of 1 meter (3 feet), to enhance its potential for thriving.

Toxicity

No verified data on the toxicity of this plant exists within Ploi's records. Should you, someone in your family, or your pet ingest plant material with an unknown toxicity level, it is recommended to seek medical advice.

Fertilizer

The Sourwood is known for its slow growth and doesn't require fertilizing beyond its potting soil. Replacing the soil in its pot once a year should offer it sufficient nutrition. It's essential to remember that plants get their energy from the sun, not from fertilizers.

Region of origin

Sourwood’s native range is South-eastern N. America - Pennsylvania to Florida, west to Louisiana and Ohio.


More info:
Wikipedia