⚠️ Not safe for petsPerennial life cycle, blooms annually.30 to 61 cm
LightFull sun
WaterLow
DifficultyEasy
ColdResistant down to -10 degrees Celsius
Full sunLowEasyResistant down to -10 degrees Celsius
Description & origin
Sea Holly is a perennial plant that thrives in coastal environments. Its spiky leaves and blue flowers make it a popular choice for beach gardens.
Size
Maintains an upright and compact habit.
Foliage
Leaves are spiky and grey-green in color.
Flowering
Blooms in summer, producing spherical flower heads.
Detailed care
Light
Prefers full sun but can tolerate partial shade.
Soil
Prefers well-drained, sandy or rocky soils.
Watering
Requires little water, water only when the soil is dry.
Temperature
Resistant to low temperatures but should be protected from severe frost.
Fertilising
Fertilize once in spring with a balanced fertilizer.
Repotting
Transplant in spring when the plants are actively growing.
Pruning
Light pruning after flowering to maintain shape.
Propagation
Can be propagated by seeds or division of clumps.
Common problems
Pests
Can be affected by aphids and scale insects.
Fungal diseases
Risk of fungi in overly humid conditions.
Wilting
Overwatering can cause wilting and root rot.
Uses & curiosities
In the garden
- Ideal for beach gardens
- Used in borders and beds
- Attracts pollinators
Other uses
Can be used in dried floral arrangements.
Did you know…
This plant is salt-tolerant, making it ideal for coastal areas. Its flowers attract pollinators such as bees and butterflies.