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Flower seeds to sow indoors in April

Shop flower seeds to sow indoors in April with confidence

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Used at RHS Chelsea Flower Show
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Showing Seeds Flower seed Sowing month inside or protected : April clear all
122 items
Salvia viridis Pink Lagoon

25% off

Salvia viridis 'Pink Lagoon'
£2.49 £1.87
approx 300 seeds
Tagetes patula Strawberry Blonde

New

25% off

Tagetes patula 'Strawberry Blonde'
From £2.84
approx 50 seeds
Tanacetum vulgare

25% off

tansy
£2.99 £2.24
approx 35 seeds
1 star 1 star 1 star 1 star 1 star 5.0 5 2 (2)
Viola Vivaldi Beacon

New

Viola 'Vivaldi Beacon'
£4.99
approx 20 seeds
Cherry creme brûlée cutting garden collection

25% off

Cherry créme brûlée cutting garden collection
£25.33 £19.00
1 × collection
Summer nights cutting garden collection

25% off

Summer nights cutting garden collection
£28.43 £21.32
1 × collection
Lepidium sativum

25% off

Lepidium sativum
£2.99 £2.24
approx 4500 seeds
Mimosa pudica

25% off

Mimosa pudica
£3.29 £2.47
approx 150 seeds
Lunaria annua Chedglow
Lunaria annua 'Chedglow'
From £3.74
available to order from summer
0.75 star 1 star 1 star 1 star 1 star 4.7 5 3 (3)
Tropaeolum majus Tip Top Apricot

New

nasturtium - Tropaeolum majus 'Tip Top Apricot'
£2.79 £2.09
available to order from autumn
Nicotiana × sanderae Perfume Deep Purple (Perfume Series)

New

Nicotiana × sanderae 'Perfume Deep Purple' (Perfume Series)
£2.99 £2.24
available to order from autumn
Antirrhinum majus Madame Butterfly Pink
Antirrhinum majus 'Madame Butterfly Pink'
£4.49 £3.37
available to order from autumn
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 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)
Tropaeolum majus Purple Emperor

New

nasturtium - Tropaeolum majus 'Purple Emperor'
£3.29 £2.47
sold out
Award-winning sweet pea collection
Award-winning sweet pea collection
£10.27 £7.48
available to order from autumn
Aquilegia vulgaris Pink Petticoat

New

Aquilegia vulgaris 'Pink Petticoat'
£3.99 £2.99
available to order from autumn
Centaurea cyanus Classic Fantastic
Centaurea cyanus 'Classic Fantastic'
£2.99 £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
Delphinium requienii

New

Delphinium requienii
£4.99 £3.74
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
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Our flower seeds to sow indoors in April 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.

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