Sweet Flag | Acorus calamus
A vibrant vertical accent
Grown by Caroline
Enfield
Choose your size
In stock
Order before 11pm for delivery within 3-5 working days
Order before 11pm for delivery within 3-5 working days
Order before 11pm for delivery within 3-5 working days
Order before 11pm for delivery within 3-5 working days
Plant diary
- Flower
- Harvest
Sweet Flag
Acorus calamus
- Bright green tufts of sword-shaped leaves with a wavy edge and a prominent midrib. Acorus produces tiny green-yellow flowers in May, followed by reddish berries
- A beneficial pond edge plant for attracting wildlife, offering cover for emerging creatures including froglets and newly hatched dragonflies
- Fully hardy, low maintenance and unbothered by pests and diseases
- The decorative foliage has a pleasant aromatic scent when crushed
- Grow in a sunny or partly shaded position around ponds, rain and bog gardens, streams and lakes
What to expect
Supplied as
Eventual height
Eventual spread
Flower colour
Habit
Hardiness
Spacing
Will this grow in my garden?
Can I grow this in a pot?
Yes, the Sweet Flag is well-suited to being grown in a pot, provided it is kept in consistently moist or waterlogged soil.
How big does it get?
The Sweet Flag can reach an impressive height of 90-120 cm and spreads to about 60 cm.
How much sunlight does this need?
The Sweet Flag prefers full sun but will also grow in partial shade.
What kind of soil does this plant prefer?
Sweet Flag prefers consistently moist or waterlogged soil, ideally in the shallow margins of a pond.
How much watering does this plant need?
The Sweet Flag thrives in boggy conditions and needs regular watering to maintain a waterlogged soil environment.
Will this plant need pruning?
The Sweet Flag should be cut back to about 5 cm above the soil level in late autumn before temperatures drop below 5°C.
How hardy is this plant?
Acorus calamus is fully hardy (H6), surviving temperatures down to -20°C across the UK.
The wider garden
Enfield
Meet Caroline
A deep dive into sustainable gardening
Nestled amongst wildlife meadows and resident ducks, Caroline’s award winning pond plant nursery in Enfield has been making a splash since 1965, when they invented the (recycled, obvs) aquatic basket. Sixty years and multiple RHS gold medals later, they’re still surprising us with new varieties every year!
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