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Hydrangea macrophylla Altona

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Historic variety - a great all rounder

A relatively small and compact deciduous shrub, with broad, deeply toothed leaves that are dark green in colour. In summer large mop-head flowers appear, these are initially yellow or green before turning pink - or if your soil is lime free they can turn purple or blue. As autumn arrives the flowers turn a rich dramatic red.

Where?

Happy in a sunny or partly shaded position. Ideal for a cottage garden, in a border or container. It also makes a great cut flower.

How?

Loves growing in a fertile, well-drained, soil. Keep well watered in dry spells. Add lime to encourage pink blooms or aluminium sulphate to produce blue flowers. Use a good quality potting compost for container growing.

First introduced in 1931 'Altona' is a German cultivar.

Plant details


In depth plant information

Property Value
Plant type Ornamental shrub
Flower colour
Foliage colour
Typically available April - September
Season of interest Spring, Summer
Flowering August - October
Evergreen No
Plant height 50 cm - 100 cm
Plant width 100 cm - 150 cm
Fragrant flowers No
Hazardous All parts highly toxic if eaten,May cause an allergic skin reaction
Attracts bees No
Attracts butterflies No
Plant height in 5 years 50 cm
Hardiness zone (?) H5

Will perform best in these conditions

Property Value
Soil type Chalk, Clay, Loam, Sand
Light exposure Full shade
Soil drainage Well drained, Medium
Planting instructions

Water the plant in its pot thoroughly before planting – give it a good soaking. Prepare the area by digging a hole twice the size of the pot. Dig compost into the base of the hole. Remove the pot and position the plant in the hole, with the top of the rootball about level with the surrounding soil. Refill the planting hole with a mixture of garden soil and compost, firming as you go. Water in well and keep well watered during the plant's first year.

Planting site Patio container, Flower border and beds, Cottage garden, Informal garden, City garden, Courtyard garden

Typically available

From April to September