What hardiness zone is London?

London is rated RHS H3 (about USDA 9b), based on an average annual extreme low near -2°C (28°F). See the full guide at https://g4rden.com/grow/london/, or start a garden in the planner at https://g4rden.com/app/ (set your location there).

When is the last frost in London?

On average the last spring frost in London falls around February 27 and the first fall frost around December 4, giving roughly 280 frost-free days. See the full guide at https://g4rden.com/grow/london/, or start a garden in the planner at https://g4rden.com/app/ (set your location there).

What can I grow in London?

London's climate suits 214+ plants including Acorn Squash, Alfalfa, Amaranth Greens, Anaheim, Anise Hyssop, Artichoke, Arugula, Austrian Winter Pea. Vegetables, herbs, fruit and flowers all do well in RHS H3. See the full guide at https://g4rden.com/grow/london/, or start a garden in the planner at https://g4rden.com/app/ (set your location there).

What is easy to grow for beginners in London?

Good beginner crops for London include Arugula, Austrian Winter Pea, Beet, Blanket Flower, Bok Choy, Borage — hardy, quick to mature, and sown straight into the ground. See the full guide at https://g4rden.com/grow/london/, or start a garden in the planner at https://g4rden.com/app/ (set your location there).

What to grow in London

A local planting guide for England, United Kingdom — RHS H3, average frost dates, and the vegetables, herbs and flowers that thrive here.

London climate at a glance

Decoded from long-run climate normals for London's location. Use it as a starting point — your own garden's aspect, walls and soil shift these by a week or two.

RHS hardiness

Average winter low

2°C (35°F)

Average summer high

21°C (70°F)

Last spring frost

February 27 (avg)

First fall frost

December 4 (avg)

Frost-free growing season

~280 days

Annual rainfall

650 mm/yr (26 in)

Hot days (≥30°C) per year

~0 days

Best plants for London

214 plants in the library suit RHS H3. Tap any one for its sowing calendar, spacing and companions.

Easy starter picks for London

New to growing? These are forgiving, fast, and can go straight into the ground — a good first season in RHS H3.

Arugula Austrian Winter Pea Beet Blanket Flower Bok Choy Borage Broccoli Raab Calendula Carrot Catnip

Plan your London garden →

What to grow in London

London climate at a glance

Best plants for London

Vegetables 126

Herbs 37

Fruit & Berries 12

Flowers 20

Natives 10

Cover Crops 8

Easy starter picks for London