Ceratostigma willmottianum

Ceratostigma willmottianum
hardy plumbago

SIZE/TYPE	low or groundcovering
USUAL HEIGHT	0.5-0.8m
USUAL WIDTH	0.5-1m
LEAVES	deciduous broadleaf
COLOUR OF LEAVES	green
FLOWERS	showy
COLOUR OF FLOWERS	sky blue
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
BELONGS TO CATEGORIES	Deciduous broadleaf Summer blooms

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.