Gardening in Dorset
Dorset combines a comparatively sunny, often dry south-coast influence with exposed chalk downs, sheltered valleys and pockets of heavier clay. This makes drainage and wind important local themes. Chalky gardens can warm quickly in spring but dry out fast, while coastal plots may be mild yet breezy. Inland hollows can catch frost, so the gardening year is usually longer on sheltered slopes than on open higher ground.
The growing season in Dorset
Based on the South West England region: last spring frost late April to mid May, first autumn frost late October to November.
One of Britain's longest growing seasons, shaped by mild maritime conditions. Coastal Cornwall, Devon and sheltered urban gardens may stay largely frost-free for long spells, while inland valleys and higher ground can be notably colder. These are approximate regional averages only: aspect, altitude and frost pockets can make a garden behave very differently.
What grows well in Dorset
Mediterranean-style herbs, lavender, roses, peas, beans, onions and fruit can thrive where Dorset soil is well drained and moisture is conserved. On chalk, work in compost regularly, mulch bare soil and water deeply rather than little and often. Clay-valley gardeners should improve drainage before planting. Give tender vegetables a warm, protected position, and use windbreaks near the coast so young plants establish without being checked by gusts.
Plan your Dorset garden
Gardening in Dorset: frequently asked questions
When is the last frost in Dorset?
The last spring frost in Dorset is typically around late April to mid May, and the first autumn frost around late October to November, based on the South West England region.
When can I start planting outdoors in Dorset?
Hardy crops can be sown from early spring. Wait until after the last frost (around late April to mid May) before planting out tender crops such as tomatoes, courgettes and runner beans.
What grows well in Dorset?
Mediterranean-style herbs, lavender, roses, peas, beans, onions and fruit can thrive where Dorset soil is well drained and moisture is conserved.
Frost and season figures are approximate regional averages; aspect, altitude and shelter shift them locally. Check the current Bournemouth forecast before sowing tender crops. Page updated 18 Sep 2026.