Ceratostigma willmottianum hardy plumbago
size/type
low or groundcovering,low or groundcovering
usual height
0,5-0,8m
usual width
0,5-1m
leaves
deciduous broadleaf
colour of leaves
flowers
showy
colour of flowers
blooming time
August-October
location
full sun
soil type
any (acidic to alkaline)
soil moisture requirements
evenly moist (dislikes drought)
USDA zone (lowest)
6b (down to -21°C)
winter protection
for zone 5+6
for zone 7
categorized
Description of the plant:
Hardy plumbago is a superb substitution for its tender relative common in the Mediterranean. This one has even deeper blue flowers with 5 petals, mid-green, bristly, obovate, deciduous leaves with purple margins and purple stems. The plants itself is very dense and in full sun bears profusion of flowers.
Grow hardy plumbago in a sheltered position with plenty of sunlight. It is soil tolerant but does best in light, semi-fertile, well drained soil. It is often used in larger rockeries. If it gets damaged after a severe winter just remove dead branches or cut back the plant 10*20 cm above ground level. It will pick up again. Hardy to about -20° or to -24°C with sufficient protection against freezing of basal branches.
Last update 18-09-2008
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GLOSSARY
- STANDARD QUALITY - Plants of this group are 1st class quality with number of branches and overall density adequate to their size and age, considering they were container grown.
- DE LUXE QUALITY - This label guarantees a luxurious quality of manually selected plants that, compared to their height and age, are exceptionally dense and beautiful.
- EXTRA - These plants are usually mature and bigger specimens with exceptional overall appearance.
- STANDARD (as described in the plant form) means a tree with a trunk of 190-210 cm and a crown at the top, unless specified differently. The commercial size for trees is their girth measured in the height of 1m from ground.
- HOBBY - These plants are of the same quality as our standard-quality plants but younger and therefore cheaper.
- SHRUB - a woody plant with branches growing bushy from the ground level.
- HALF-STANDARD or MINI-STANDARD - a small tree with shorter trunk, its size is usually specified.
- FEATHERED - These are trees with branches growing already from the base of the trunk and up along the stem.
- GRASSES and PERENNIALS - Sizes given usually read the diameter of the pot or the clump, as specified.
