Chalk soil in the South Downs
Chalk soil is typically alkaline, stony and free-draining. It can dry out quickly in summer and may be shallow in places, especially on slopes. Although this can be challenging for moisture-loving plants, many trees, shrubs and perennials thrive in it, particularly those adapted to sunny, open conditions.
In East Dean & Friston, wind exposure and coastal influence can add to the challenge, so choosing the right plants and improving moisture retention where possible can make a big difference.
Shrubs that thrive on chalk
These are often among the best performers in local gardens, especially in sunny, well-drained borders.
- Lavender
- Ceanothus
- Hebe
- Cistus
- Cotinus
- Philadelphus
Perennials for dry alkaline soil
Many cottage-garden favourites and drought-tolerant perennials do well once established.
- Salvia
- Nepeta
- Achillea
- Eryngium
- Verbena bonariensis
- Geranium sanguineum
Trees suited to chalk
Some trees cope particularly well with alkaline, free-draining soils and exposed positions.
- Amelanchier
- Crab apple
- Hawthorn
- Yew
- Sorbus
- Field maple
Plants that may struggle
Plants that prefer acidic, moisture-retentive soil often perform poorly unless grown in improved beds or containers.
- Rhododendrons
- Camellias
- Azaleas
- Blue hydrangeas
- Pieris
- Heathers
Soil improvement tips
- Add garden compost or well-rotted organic matter regularly to improve structure and water retention.
- Mulch in spring to help keep roots cool and conserve moisture through summer.
- Choose drought-tolerant plants for the sunniest and driest spots.
- Use containers or raised beds for plants that dislike alkaline soil.
- Water deeply and less often to encourage roots to grow down into the soil.
- Expect newly planted shrubs and perennials to need extra watering in their first year.
