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Hydrangea aspera - D.Don.

Common Name Hydrangea
Family Hydrangeaceae
USDA hardiness 7-9
Known Hazards There is a report that the fresh plant contains the toxin hydrogen cyanide[243]. In small quantities, hydrogen cyanide has been shown to stimulate respiration and improve digestion, it is also claimed to be of benefit in the treatment of cancer. In excess, however, it can cause respiratory failure and even death.
Habitats Scrub and forest in the mountains, 1200 - 2700 metres from Uttar Pradesh to S.W. China and Burma[51, 184]. Dense forests or thickets in valleys or on mountain slopes[266].
Range E. Asia - China to the Himalayas.
Edibility Rating    (1 of 5)
Other Uses    (0 of 5)
Weed Potential No
Medicinal Rating    (0 of 5)
Care (info)
Fully Hardy Well drained soil Moist Soil Semi-shade Full sun
Hydrangea aspera Hydrangea


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Hydrangea aspera Hydrangea
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Summary

Bloom Color: Lavender, White. Main Bloom Time: Late summer, Mid summer. Form: Rounded, Vase.


Physical Characteristics

 icon of manicon of shrub
Hydrangea aspera is a deciduous Shrub growing to 4 m (13ft) by 4 m (13ft) at a medium rate.
See above for USDA hardiness. It is hardy to UK zone 7 and is not frost tender. It is in flower from July to September, and the seeds ripen from September to November. The species is hermaphrodite (has both male and female organs).
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils and can grow in very acid and very alkaline soils.
It can grow in semi-shade (light woodland) or no shade. It prefers dry or moist soil.

UK Hardiness Map US Hardiness Map

Synonyms

Habitats

Woodland Garden Sunny Edge; Dappled Shade; Shady Edge;

Edible Uses

Edible Parts:
Edible Uses: Tea

The leaves are used as a tea substitute[177, 183]. Some caution is advised, see the notes above on toxicity.

References   More on Edible Uses

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.


None known

References   More on Medicinal Uses

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FOOD FOREST PLANTS

Other Uses

None known

Special Uses

References   More on Other Uses

Cultivation details

Landscape Uses:Specimen. Succeeds in most good soils, including chalk[184].This species is one of the most chalk-tolerant members of the genus[200]. Tolerates most soils[200], thriving in a well-drained loamy soil[1], but resenting dryness at the roots[11, 200]. Succeeds in full sun or semi-shade[200], but if it is grown in a low rainfall area then it requires shade at the hottest part of the day[11]. Does well on very acid soils with a pH around 4.5[200]. The colour of the flowers reflects the pH of the soil the plant is growing in, the flowers are pink in a neutral to alkaline soil and blue in an acid soil. Grows well in an open woodland garden[200]. Although fairly tolerant of soil type, this species is not very easy to grow well, it is best given a dryish soil, it resents winter wet[11]. Dormant plants are hardy to about -15°c[184]. They are somewhat tender when young, and the young growth of older plants is also susceptible to damage by late frosts[11]. Plants resent being pruned[202]. This species is notably susceptible to honey fungus[200]. Special Features:Suitable for cut flowers, Suitable for dried flowers, Blooms are very showy.

References   Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

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Propagation

Seed - surface sow in a greenhouse in spring[113]. Cover the pot with paper until the seed germinates[78]. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Cuttings of half-ripe wood, 8cm long, July/August in a frame. Overwinter in a greenhouse and plant out in late spring[78]. Cuttings of mature wood in late autumn in a frame[200]. Mound layering in spring. Takes 12 months[78]. Leaf-bud cuttings of the current seasons growth in a frame[200].

Other Names

If available other names are mentioned here

Found In

Countries where the plant has been found are listed here if the information is available

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

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Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.

 

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Author

D.Don.

Botanical References

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