Overview
Lysimachia ciliata is a perennial herb in the genus Lysimachia, part of the Primulaceae family. It typically grows around 1.2 metres tall. Lysimachia ciliata grows best in full sun and partial shade, and tolerates moist and well-drained soil soils. Its UK hardiness is rated H7. Suggested uses include borders, naturalized areas and wetland gardens. It is native to Alberta, British Columbia, Manitoba, New Brunswick, Nova Scotia and Ontario.
About
Lysimachia ciliata is an erect perennial herb that reaches around 1.2 metres and flowers in the UK from June to September. It favours consistently moist, well-drained soil and performs in full sun or partial shade. Fully hardy (H7), it suits sites where soil moisture is reliable. Place it where its height contributes to a border or a wet area.
Wikipedia contributors, CC BY-SA 4.0 — Lysimachia ciliata
About the genus
Lysimachia is a genus consisting of 182 accepted species of flowering plants traditionally classified in the family Primulaceae. Based on a molecular phylogenetic study it was transferred to the family Myrsinaceae, before this family was later merged into the Primulaceae.
Wikipedia contributors, "Lysimachia", CC BY-SA 4.0 — Lysimachia
In the garden
Lysimachia ciliata belongs to the Primulaceae and the genus Lysimachia and is native to parts of Canada including Alberta, British Columbia, Manitoba, New Brunswick, Nova Scotia and Ontario. It grows to approximately 1.2 metres and produces its summer display between June and September. Give Lysimachia ciliata a sunny or partly shaded position with soil that stays moist but drains—avoid dry, free-draining soils. The species prefers consistently moist conditions and will tolerate some shade where moisture remains adequate. It is rated H7, meaning it is fully hardy in UK gardens and does not require winter protection. Use it at the back of a mixed border for summer height, in naturalised plantings or in wetland and marginal garden areas where irrigation is impractical. Planting where summer moisture is reliable helps maintain vigour and flowering. A planting plan that accounts for its 1.2 metre stature keeps neighbouring plants from being shaded late in the season, and locating it near ponds or moisture-retentive soil will suit its preferences.
Growing conditions
Best soil and position for Lysimachia
- Sunlight
- full sun, partial shade
- Soil type
- moist, well-drained soil
- Soil moisture
- moist
- UK hardiness
- H7
Plant details
Lysimachia ciliata size, habit and characteristics
- Plant type
- perennial herb
- Height
- 1.2 metres
- Suggested uses
- borders, naturalized areas, wetland gardens
- Native to
- Alberta, British Columbia, Manitoba, New Brunswick, Nova Scotia, Ontario
Care notes
Pruning and caring for Lysimachia ciliata
- Cultivation
- Prefers moist, fertile soil; tolerates partial shade; can spread aggressively
- Pruning
- Cut back after flowering to control spread
- Propagation
- division, seed
Frequently asked questions
How do I grow Lysimachia ciliata?
Prefers moist, fertile soil; tolerates partial shade; can spread aggressively.
Where is the best place to plant Lysimachia ciliata?
Lysimachia ciliata prefers full sun and partial shade.
What soil does Lysimachia ciliata need?
Lysimachia ciliata grows best in moist and well-drained soil soil. Aim for soil that stays moist.
How do I prune Lysimachia ciliata?
Cut back after flowering to control spread.
How big does Lysimachia ciliata grow?
Lysimachia ciliata reaches a height of 1.2 metres.
Is Lysimachia ciliata hardy in the UK?
Lysimachia ciliata has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.
How do I propagate Lysimachia ciliata?
Division, seed.
More in the Lysimachia genus
- Lysimachia atropurpurea 'Beaujolais'
- Lysimachia ephemrum
- Lysimachia leschenaultiicarmine-flowered loosestrife