About
Quartz Series are compact annuals to 25cm, with ovate leaves and large domed clusters of flowers in shades of red, violet-blue, salmon and white, some with a white eye, in summer and autumn.
About the genus
Glandularia are annuals or herbaceous perennials, native to The Americas and closely-related to Verbena (and included within Verbena until recently). Showy flowers typically have 5 petals and are held in rounded clusters in summer and autumn
Growing conditions
SunlightFull sun
Soil typeChalk, Clay, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained
AspectSouth-facing
ExposureExposed, Sheltered
UK hardinessH2
Plant details
Plant typeAnnual Biennial, Bedding
HabitBushy
FoliageDeciduous
Height0.1-0.5 metres
Spread0.1-0.5 metres
Time to full height1-2 years
Suggested usesCity and courtyard gardens, Cottage and informal garden, Patio and container plants
Care notes
CultivationBest grown in moist but well-drained soil in full sun.
PruningNo pruning required
PropagationPropagate by seed or stem tip cuttings
Pest resistanceMay be susceptible to slugs, leafhoppers and aphids
Disease resistanceSome resistance to powdery mildews