Hydrangea kawakamii is endemic to Taiwan. It grows in dense forests at elevations of 2200–2300 meters above sea level.
Hydrangea kawakamii also called as Rough-Leaved Hydrangea, Hydrangea aspera Kawakamii, is a species of the genus Hydrangea. This species was described by Bunzō Hayata in 1908.
IDENTIFY HYDRANGEA KAWAKAMII PLANT
Hydrangea kawakamii is endemic to Taiwan. It grows in dense forests at elevations of 2200–2300 meters above sea level.
Rough-Leaved Hydrangea is a climbing shrubs, which reaching 10 feet tall, with young branchlets, petioles, and inflorescences densely yellow-brown pubescent. Branchlets dark gray, terete, glabrescent. Petiole 2-9 cm. The leaves oblong-ovate to elliptic, 9-12 × 4.5-10 cm, papery, abaxially densely slightly crisped pubescent, adaxially sparsely strigose, secondary veins 6 or 7 on both sides of midvein, abaxially prominent, base broadly cuneate to rounded, margin irregularly doubly serrate, apex acute to shortly acuminate.
Hydrangea aspera Kawakamii bloom in July from the corymbose cymes inflorescences, lax, 10-14 cm wide, apex truncate to slightly arcuate. The sterile flowers with sepals 3 or 4, suborbicular, 1-2 cm, margin acutely dentate. The fertile flowers with calyx tube cupular, ca. 1.5 mm; teeth broadly triangular, ca. 1 mm. Petals oblong-ovate, ca. 2 mm.
The key to identify this species is: ovary completely inferior; capsule apex truncate; petals free; seeds winged at both ends with transverse veins between striate veins; leaf blade margin serrate; bracts not enveloping inflorescence in bud, lanceolate; shrubs or small trees; branchlets glabrous or with simple hairs.
HYDRANGEA KAWAKAMII 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 kawakamii 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 aspera Kawakamii 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:
Rough-Leaved Hydrangea 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 kawakamii 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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