trefle.io · Taken Apr 18, 2018 by Guilhem Espert (cc-by-sa)
Polygalaceae
Chalk milkwort
Polygala calcarea
Also known as Limestone milkwort, Milkwort, Polygala calcarea, Polygala calcarea var. corbariensis
Native Plants · Wildflower · Chalk Grassland · Native · Rock Garden · Milkwort · Perennial · Blue Flowers · European Native · Specialist Plant · Polygala
Chalk milkwort is a delicate, low-growing wildflower that thrives in well-drained, alkaline or chalky soils and is best suited to rock gardens or native wildflower meadows. It needs full sun to partial shade and consistent but moderate moisture — never allow the soil to become waterlogged or too rich, as this will inhibit flowering. This is a specialist plant best for experienced gardeners recreating chalk grassland habitats.
Growing conditions
The details behind the basics
- Daily light
- 5 hours
- Watering
- Water lightly to keep soil slightly moist; avoid waterlogging · Every 7-10 days
- Maintenance
- High
- Soil
- loam
- Soil pH
- 8–9
- Temperature
- -20°F to 90°F
- Cycle
- Perennial
- Propagation
- Seed, Division
Hardiness
USDA 4a-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 3 ft
- Spread
- 2 ft
- Spacing
- 6 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Belgium, France, Germany, Great Britain, Italy, Spain, Switzerland
- Attracts
- Bees, Butterflies
Sources: trefle, usda
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