Hydrangea strigosa is native to China. It grow in dense to sparse forests or thickets in valleys, trailsides on mountain slopes at elevations of 500-1800 meters above sea level in NW Guizhou, W Hubei, NW Hunan, S Shaanxi, Sichuan.
Hydrangea strigosa also called as Hydrangea aspera subsp. strigosa, Hydrangea aspera var. angustifolia, Hydrangea aspera var. macrophylla, Hydrangea aspera var. sinica, Hydrangea strigosa var. angustifolia, Hydrangea strigosa var. macrophylla, Hydrangea strigosa var. purpurea, Hydrangea strigosa var. sinica, Hydrangea strigosa f. sterilis, is a species of the genus Hydrangea. This species was described by Alfred Rehder in 1911.
IDENTIFY HYDRANGEA STRIGOSA PLANT
Hydrangea strigosa is native to China. It grow in dense to sparse forests or thickets in valleys, trailside on mountain slopes at elevations of 500-1800 meters above sea level in NW Guizhou, W Hubei, NW Hunan, S Shaanxi, Sichuan.
It is a shrub which reaching 1-3 meters tall with branchlets gray-brown, terete or obscurely 4-angled, densely strigose; bark usually peeled off into fragments. The petiole is 1-7 cm, strigose; leaf blade abaxially sometimes purplish red to reddish when fresh but gray-brown to gray-green when dry, adaxially black-brown, oblong, ovate-lanceolate, or obovate-oblanceolate, 8-28 × 2-10 cm, papery, abaxially densely gray-brown glandular granular and gray-white strigose, adaxially sparsely strigose to subglabrous, secondary veins 7-10 on both sides of midvein, abaxially prominent, base obtuse, cuneate, or rounded, margin serrulate, apex acuminate.
Hydrangea aspera subsp. strigosa bloom in July-August from the corymbose cymes inflorescences, to 28 cm wide, apex slightly arcuate; branches spreading, gray-white strigose. The sterile flowers with sepals 4 or 5, white to purplish red, broadly ovate, broadly elliptic, suborbicular, or broadly orbicular, margin entire to denticulate. The fertile flowers with calyx tube campanulate, ca. 2 mm; teeth triangular, ca. 0.5 mm. Petals purplish red, oblong-ovate, 2-2.5 mm. Stamens 10, unequal, 3-6 mm; anthers oblong, ca. 0.5 mm. Ovary inferior.
The key to identify this species is: ovary completely inferior; capsule apex truncate petals free; seeds winged at both ends without transverse veins; leaf blade margin serrate, papery or thickly so, abaxially strigose, ; bracts glabrous or with simple hairs ,not enveloping inflorescence in bud, lanceolate; shrubs; branchlets terete or obscurely 4-angled; petiole usually long and thin or short and thick; fertile flowers rose, purple-red, or purple-blue.
HYDRANGEA STRIGOSA PLANT CARE AND CULTURE
Cultural information should only be used as a guide, and should be to be adapted to suit you. Your physical location; where you grow your plants, how much time you have to devote to their care, and many other factors, will need to be taken into account. Only then can you decide on the cultural methods that best suit you and your plants.
Light:
Hydrangea strigosa love the warm morning sun, but they dislike the heat of the afternoon (can grow in full sun with adequate soil moisture). The best place to plant this species is in a sheltered location with sunny mornings and shady afternoons. Avoid planting directly underneath trees, which can lead to competition for water and nutrients. Although they can be successfully grown in full shade, they will not bloom well.
Temperature:
Keep the plants in a cool location, from 18° to 24°C. This plant grow well and are reliably winter hardy. Cold winters and late spring frosts can often kill flower buds, preventing plants from blooming in the spring.
Substrate, growing media:
Hydrangea strigosa are best planted in soil that has been amended with adequate amounts of organic matter, such as compost, leaf mold, or well-composted manure. While most hydrangeas grow better in soil that is lower in pH (acidic), they will tolerate higher pH soils (alkaline) quite well.
Watering and humidity:
Hydrangea aspera subsp. strigosa prefer consistent moisture but dislike wet feet. Mulch to help conserve moisture and cool the root system. A two- to three-inch layer of mulch will help to conserve moisture.
Fertilizer:
Fertilizing is generally not recommended unless a nutrient deficiency is observed. This plants may need little fertilizer in rich soil with organic matter applied yearly. Avoid using too much nitrogen - this can encourage foliage growth at the expense of blooms.
Pruning:
Hydrangea strigosa can be left unpruned and only blackened winter-injured tips removed in the spring. Dead or diseased branches can be pruned out at any time of the year.
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