Hydrangea aspera - Hortensía - Hindarblóm - Stássjurtir - Garðyrkja

Описание

Hydrangeas - Hydrangea aspera - Stofuhind - Japönsk hortensía - Hortensia à grandes feuilles - French hydrangea - Bigleaf hydrangea - Hortensia - Garten-Hortensie - 绣球花 - हाइड्रेंजिया को - 수국 핑크아리 - Hortensie - Ortensia - 繡球 - アジサイ - Hortensía - Hindarblóm - Stofuhortensía - Skrautgróður.

Stofuhortensía - Hydrangea macrophylla. Hér er um að ræða runna af steinbrjótsætt — Saxifragaceae, en í þeirri ætt er stæðilegur hópur forkunnarfagurra jurta, sem ræktaðar eru í görðum. Lesa meira: https://timarit.is/view_page_init.jsp?pageId=1676598

This colour change is due to the soil pH which affects aluminium availability. Those with blue or pink flowers tend to be blue in acid soil conditions - high available aluminium levels, mauve in acid to neutral soil conditions, and pink in alkaline conditions. To get the best flower colour, choose cultivars that give the best colours for the pH in question. http://apps.rhs.org.uk/advicesearch/profile.aspx?pid=122

Hydrangea aspera - is a shrub native to the region between the Himalaya, across southern China, to Taiwan. The flowers are typically borne in large heads and are in variable shades of pale blue. Considerable natural variation occurs in the species, and some of the variations are sometimes considered to be separate species; these include H. aspera ssp. sargentiana and H. villosa. http://en.wikipedia.org/wiki/Hydrangea_aspera

There are two flower arrangements in hydrangeas. Mophead flowers are large round flowerheads resembling pom-poms or, as the name implies, the head of a mop. In contrast, lacecap flowers bear round, flat flowerheads with a center core of subdued, fertile flowers surrounded by outer rings of showy, sterile flowers. http://en.wikipedia.org/wiki/Hydrangea

Hydrangea make beautiful specimen plants in the garden. May have interesting foliage and bark, but most are grown for their large showing blossoms. http://gardening.about.com/od/treesshrubs/a/Prune_Hydrangea.htm

The first year that the hydrangea is growing in the pot, normal watering is required, as you would any potted plant. The second year, the roots should begin growing out the drainage holes and into the ground. Don't move the pot. As one might expect, the better the plant becomes rooted into the ground, the less it needs supplemental watering. http://www.hydrangeashydrangeas.com/

There are two main groups of hydrangeas:
Group 1: Plants that bloom on new growth (this year's stems) These hydrangeas, which form their buds in early summer on new growth, will flower reliability each year, requiring no special care. Panicle hydrangeas - H. paniculata - are hardy to Zone 3 and boast fat, cone-shaped flower heads. They are a good choice for a beginner. The most common cultivar is 'Grandiflora', or P.G. (PeeGee) after its initials, a big old-fashioned floppy shrub that is 10 to 15 feet tall. Smooth hydrangeas - H. arborescens - or "snowballs" are excellent for cold climates, flowering reliability in Zone 3. The flowers look like oversized white-flowered pop-poms. Look for cultivars 'Grandiflora' and 'Annabelle' which produce large blooms in late summer.

Group 2: Plants that bloom on old growth (last year's stems) If you live in Zone 8 or warmer, choose plants from this group. Oakleaf hydrangeas - H. quercifolia - exhibit incredible bud hardiness and thrive in Zone 5. This graceful plant is noted for its spectacular fall colors that range from red to purplish burgundy. The flower heads turn a rich brown that lasts all winter. Try 'Snow Queen', 'Snow Flake', and 'Alice.'
Bigleaf hydrangeas - H. macrophylla - are the most common species and come in two flower shapes: Mopheads (or Hortensias) which are hardy to Zone 6 and bear large, ball-shaped flowers and lacecaps which are suitable for Zones 5 to 9 and form airy, elegant, flat-topped clusters of flowers. We love 'All Summer Beauty' (Hortensia) which has profuse, dark blue flowers, pinker on soil near neutral. 'Nikko Blue' (Hortensia) is vigorous, with large, rounded blue flowers. 'Blue Wave' (Lacecap) produces rich blue to mauve or lilac-blue to pink flowers. Climbing hydrangeas are just magnificent, lighting up the trunk of a tall tree. This vine blooms from late June to early July, exhibiting flat, lace, creamy-white flowers against glossy leaves. http://www.almanac.com/plant/hydrangea

Hindarblóm - Hydrangea hortensis -
Stofuhortensía - Hydrangea macrophylla - er ræktuð sem pottaplanta á Íslandi. Viðhvæm úti. Best í upphituðu gróðurhúsi, 5 til 10 gráður yfir veturinn. http://www.rettarholl.is/pottaplontur.html

Rósir og hindarblóm. Lesa meira: https://www.bbl.is/frettir/fraedsluhornid/rosir-og-hindarblom/10266/

Cyanogenic glucosidið hydrangin is a very rapidly acting toxin like cyanide.

Jurtir og aðrar lífverur sem hafa verið skoðaðar hjá Lyfjastofnun Íslands með tilliti til
lyfjalaga nr. 93/1994 með síðari breytingum : http://www.imca.is/media/voruflokkun/Fl_jurta_og_annarra_lifvera.pdf