Free standard delivery when you spend £75 on plants | T&Cs apply

The bulb shop is now open | Shop now

Shop

Information & Help

My account

crocus
Wish-list My wheelbarrow

Flower seeds for heavy clay soil

Shop flower seeds for heavy clay soil with confidence

By type
Facing
Special conditions
Sunlight
Flowering month
Flower colour
Evergreen / deciduous
Fragrance
Attractive to wildlife
Rate of Growth
Eventual size
Special features
Bedding planting time
Sowing month inside or protected
Sowing month outside
Vegetable harvesting month
Vegetable groups
Multibuy packs
Ready made borders
Planting combinations
Hardiness
Leaf colour
Ground cover
Position
Soil moisture
Used at RHS Chelsea Flower Show
Kitchen garden planting guidelines
Sort by availability
All items
Showing Seeds Flower seed Soil type : Heavy clay soil clear all
214 items
Cobaea scandens
Cobaea scandens
£3.19 £2.39
available to order from autumn
0 star 0 star 1 star 1 star 1 star 3.0 5 1 (1)
Cosmos bipinnatus Apricot Lemonade

New

Cosmos bipinnatus 'Apricot Lemonade'
From £2.24
available to order from autumn
Cosmos bipinnatus Cupcakes Blush (Cupcakes Series)

New

Cosmos bipinnatus 'Cupcakes Blush' (Cupcakes Series)
£3.49 £2.62
available to order from autumn
Cosmos bipinnatus Seashells mixed

New

Cosmos bipinnatus 'Seashells mixed'
£2.99 £2.24
available to order from autumn
Cosmos bipinnatus Xsenia
Cosmos bipinnatus 'Xsenia'
From £2.84
available to order from autumn
0 star 0 star 1 star 1 star 1 star 3.0 5 2 (2)
Cosmos sulphureus Bright Lights mixed
Cosmos sulphureus 'Bright Lights mixed'
£2.99 £2.24
available to order from autumn
Delphinium requienii

New

Delphinium requienii
£4.99 £3.74
available to order from autumn
Echinops ritro

New

Echinops ritro
£2.49 £1.87
available to order from autumn
Eschscholzia californica Apricot Chiffon (Thai Silk Series)

New

Eschscholzia californica 'Apricot Chiffon' (Thai Silk Series)
£2.99 £2.24
available to order from autumn
Eschscholzia californica Thai Silk Appleblossom Chiffon (Thai Silk Series)

New

Eschscholzia californica 'Thai Silk Appleblossom Chiffon' (Thai Silk Series)
£2.99 £2.24
available to order from autumn
Geranium Maderense

New

Geranium Maderense
From £2.62
available to order from autumn
Gladiolus Ruby (papilio hybrid)

New

Gladiolus 'Ruby' (papilio hybrid)
£3.99 £2.99
available to order from autumn
Lathyrus odoratus Almost Black
Lathyrus odoratus 'Almost Black'
£2.99 £2.24
available to order from autumn
Lathyrus odoratus Bobby's Girl
Lathyrus odoratus 'Bobby's Girl'
£2.99 £2.24
available to order from autumn
Lathyrus odoratus Charlie's Angel
Lathyrus odoratus 'Charlie's Angel'
From £2.62
available to order from autumn
0.25 star 1 star 1 star 1 star 1 star 4.2 5 5 (5)
Lathyrus odoratus Daphne
Lathyrus odoratus 'Daphne'
From £2.47
available to order from autumn
Lathyrus odoratus Dorothy Eckford
Lathyrus odoratus 'Dorothy Eckford'
£3.29 £2.47
available to order from autumn
Lathyrus odoratus Eclipse
Lathyrus odoratus 'Eclipse'
£2.99 £2.24
available to order from autumn
Lathyrus odoratus Karen Louise
Lathyrus odoratus 'Karen Louise'
£3.49 £2.62
available to order from autumn
1 star 1 star 1 star 1 star 1 star 5.0 5 1 (1)
Lathyrus odoratus Lisa Marie
Lathyrus odoratus 'Lisa Marie'
£3.89 £2.92
available to order from autumn
Lathyrus odoratus Mrs Bernard Jones
Lathyrus odoratus 'Mrs Bernard Jones'
£3.29 £2.47
available to order from autumn
1 star 1 star 1 star 1 star 1 star (1)
Lathyrus odoratus White Frills
Lathyrus odoratus 'White Frills'
£3.99 £2.99
available to order from autumn
Lathyrus odoratus Windsor
Lathyrus odoratus 'Windsor'
£2.99 £2.24
available to order from autumn
Linaria purpurea Canon Went

25% off

Linaria purpurea 'Canon Went'
From £2.24
9cm pot
3 × 9cm pots
6 × 9cm pots
0.5 star 1 star 1 star 1 star 1 star (2)
Lunaria rediviva

New

Lunaria rediviva
£3.99 £2.99
available to order from autumn
Matthiola incana Pillow Talk

New

Matthiola incana 'Pillow Talk'
£2.99 £2.24
available to order from autumn
Matthiola longipetala subsp. bicornis

New

Matthiola longipetala subsp. bicornis
£2.99 £2.24
available to order from autumn
Tropaeolum majus Milkmaid
nasturtium - Tropaeolum majus 'Milkmaid'
£2.99 £2.24
available to order from autumn
Tropaeolum majus Tip Top Apricot

New

nasturtium - Tropaeolum majus 'Tip Top Apricot'
£2.79 £2.09
available to order from autumn
Viola × wittrockiana Frizzle Sizzle Blue F1 (Frizzle Sizzle Series)
pansy 'Frizzle Sizzle Blue' (Frizzle Sizzle Series) F1
From £2.62
available to order from autumn
Papaver Rose Feathers

New

Papaver 'Rose Feathers'
£2.49 £1.87
available to order from autumn
Rudbeckia triloba Prairie Glow

New

Rudbeckia triloba 'Prairie Glow'
£3.99 £2.99
available to order from autumn
Edible flowers gift set
Edible flowers gift set
£11.99 £8.99
available to order from winter
Tropaeolum majus Purple Emperor

New

nasturtium - Tropaeolum majus 'Purple Emperor'
£3.29 £2.47
sold out
< Prev 1 ... 2 3 4 Next >

Our flower seeds for heavy clay soil collection is designed to make growing from seed feel simple, useful and rewarding. These flower seeds help you add colour, texture and seasonal interest, whether you are filling gaps in a border, refreshing containers or planning a more productive cutting patch. Starting with seed is a flexible way to grow more for your money, and it gives you plenty of choice when shaping the look and feel of your outdoor space.

Choose from carefully selected varieties that suit different spaces, styles and levels of experience. You can look for reliable favourites, easy options for quick results, or more distinctive choices to add interest through the season. Clear product details help you understand where each seed works best, when to sow, and what kind of result to expect, so it is easier to choose with confidence.

At Crocus, our range is curated by people who understand real gardens and the practical decisions gardeners make. From popular flower seeds to more specialist choices, we focus on quality, useful information and convenient delivery to your door. Browse the range, pick the seeds that suit your plans, and start growing a garden that feels more colourful, personal and well put together.

Copyright © Crocus.co.uk Ltd 2026. All rights reserved.

Contact us
Terms
Privacy
Cookies

© Crocus.co.uk Ltd 2026. All rights reserved.