About
Lawrence Johnston' is a spreading half-hardy perennial to 45cm tall, with toothed, ovate leaves and flat clusters of bright red flowers 1cm across in summer and early 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, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained, Well-drained
AspectWest-facing, South-facing
ExposureSheltered
UK hardinessH3
Plant details
Plant typeBedding, Herbaceous Perennial
HabitBushy
FoliageEvergreen
Height0.1-0.5 metres
Spread0.1-0.5 metres
Time to full height2-5 years
Suggested usesCoastal, Cottage and informal garden, City and courtyard gardens, Patio and container plants
Care notes
CultivationIn borders, plant in well-drained soil and full sun. In containers best grown in peat-free compost with added sharp sand.
PruningDeadheading is beneficial
PropagationTake semi-ripe stem-tip cuttings in late summer
Pest resistanceAphids, thrips and leafhoppers may be troublesome
Disease resistanceMay be susceptible to powdery mildews