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Blue camas is a delight for lovers of blue colour. This spring‑flowering bulb ranks among the taller perennials, offering a striking structure and intense colour at a time when most herbaceous plants are only beginning to gain substance. Caerulea is a result of long-term selection of forms wit ...
V - VI
0,6 - 1m
0,3 - 0,4m
full to partial sun
4 (down to -34°C)
for zone 5+6
for zone 7
Sarastro is a perennial bellflower of compact habit and with huge flowers which can measure up to 8 cm. They are rich violet-blue, opening from stiff, pending, dark violet flower buds from mid June for at least 2 months. If pruned by a half or two thirds after the main flowering it pr ...
VI - IX
0,5 - 0,6m
0,3 - 0,4m
full to partial sun
4 (down to -34°C)
for zone 5+6
for zone 7
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Coccineus is perhaps the reddest form of red valerian you can grow. Its rich raspberry‑red flowers recall old Mediterranean façades faded by sun and sea wind, only in reverse: here the colour does not fade but holds with unexpected intensity. Its habit is as light and airy as the species, form ...
V - X
0,3 - 0,8m
0,3 - 1m
full sun
5 (down to -29°C)
for zone 5+6
for zone 7
Grandiflora is a thread leaf tickseed variety, not to be mistaken for coreopsis grandiflora which is a different species. Its daisy-like flowers are bright golden-yellow with 8 accuminate petals, and appear for an extremely long flowering period from early summer (June) until the last warm days of a ...
VI - IX
0,4 - 0,6m
0,3 - 0,4m
full sun
4 (down to -34°C)
for zone 5+6
for zone 7
Pumila is a favourite Pampas grass variety of reduced size. It grows about 1.5 high in full bloom which is by almost half the height of the species. Its deciduous leaves are medium green tinted blue, about one meter long, 2-3 cm wide, and the margins are finely but sharply serrated, so they can cut ...
IX - X
1 - 1,5m
0,8 - 1,3m
full sun
5b (down to -27°C)
for zone 5+6
for zone 7
Corydalis calycosa is a beautiful perennial with blue flowers. Its originates in central China, more precisely in the Sichuan province. Although the province's climate mostly belongs to the subtropical monsoon belt, the central and northern parts have snow-capped mountains and even the Dagu Glacier. ...
VI - VII
0,3 - 0,4m
0,3 - 0,5m
semi-shade / partial sun
5 (down to -29°C)
for zone 5+6
for zone 7
Japanese fernleaf corydalis is a bit of a soloist among corydalis because unlike its sisters this one does not bloom in blue but yellow. It is a self-seeding biennial or short-lived perennial from the poppy family and it is quite variable in size and habit. Its natural habitat are sandy and coastal ...
V - VII
0,2 - 0,6m
0,3 - 0,4m
full to partial sun
5b (down to -27°C)
for zone 5+6
for zone 7
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Cousin Joan chrysanthemum belongs among very late cultivars, offering its richly coloured blooms even with the arrival of the first frosts. The flowers are simple and delicately fragrant; the petals are deep fuchsia with a narrow, almost white inner ring that contrasts cheerfully with the yellow dis ...
X - XI
0,6 - 0,8m
0,3 - 0,5m
full sun
5 (down to -29°C)
for zone 5+6
for zone 7
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