Gratiola officinalis
Hedge hyssop
- Height × spread
- 0.4m × 0.3m
- Position
- Full sun
- Hardiness
- Very cold to -20C (RHS H6)
- Flowers
- Spring, Summer, Autumn
Availability
Please ask in store about availability
Many plants are seasonal. Call 01234 567890 to check current stock.
About this plant
This is a more or less upright growing perennial that has long stems that carry, rather well spaced out, bright green shiny linear leaves. The little white flowers, yellow eyed rise from the leaf axils. They are columnar with wide flared lips, coloured white. They have some purple veining on the outside and the inside of the flowering tube. This will have flowers from May through to October. It grows in wet and moist places.
- Flower colour
- White
- Foliage colour
- Green
- Variegated
- No
- Scent
- No
- Shape
- Bell
- Height
- 0.4m
- Spread
- 0.3m
- Season of interest
- Spring, Summer, Autumn
- Flowers in
- Spring, Summer, Autumn
- Evergreen
- Deciduous
- Garden style
- Water garden
- Sun or shade
- Likes full sun
- Soil type
- Loam (normal)
- Soil pH
- All types
- Drainage
- Moisture retentive soil
- Hardiness
- Very cold to -20C (RHS H6)
- Borders & containers
- Borders
- Water depth
- Up to 1.5cm
- Hazards
- No
Spring
Spring · Outdoors
Feed with aquatic plant food
As the plant is grown in water, feed with an aquatic feed as directed on the packet. Do not exceed the amounts given as this can affect the water.
Spring - late · Outdoors
Feed with slow release fertiliser
Apply a general purpose slow release fertiliser, spreading it around the root area of the plant as it is coming into growth. (Or apply a liquid feed at regular intervals throughout the growing season.)
This is a simple way to provide a nutrient boost as a single annual procedure.
Spring-Autumn · Outdoors
Water frequently to keep the soil moist
The plant thrives in moist or boggy soil, doesn't tolerate dryness and should be watered frequently, not only after a period of drought, but if the soil begins to dry out spring to autumn. Check plants in pots more frequently, especially in hot weather.