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Seeds to sow outside in September

Shop seeds to sow outside in September and grow with confidence from seed

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Showing Seeds Sowing month outside : September clear all
19 items
Salvia rosmarinus

Best Seller

25% off

rosemary
From £1.87
approx 60 seeds
9cm pot
2 + 1 FREE 9cm pots
2 litre pot
0.5 star 1 star 1 star 1 star 1 star 4.5 5 8 (8)
Dipsacus fullonum

Best Seller

25% off

Dipsacus fullonum
From £2.24
approx 150 seeds
9cm pot
3 × 9cm pots
6 × 9cm pots
1 star 1 star 1 star 1 star 1 star 5.0 5 5 (5)
Antirrhinum majus Madame Butterfly Bronze White

25% off

Antirrhinum majus 'Madame Butterfly Bronze White'
£3.49 £2.62
approx 25 seeds
Antirrhinum majus Madame Butterfly Red
Antirrhinum majus 'Madame Butterfly Red'
£3.49
approx 25 seeds
Echium vulgare

25% off

Echium vulgare
£2.99 £2.24
approx 35 seeds
0 star 0 star 0.25 star 1 star 1 star 2.3 5 3 (3)
Viola tricolor

25% off

heartease
£2.79 £2.09
approx 75 seeds
Viola × wittrockiana Frizzle Sizzle Burgundy F1 (Frizzle Sizzle Series)

25% off

pansy 'Frizzle Sizzle Burgundy' (Frizzle Sizzle Series) F1
From £3.74
approx 25 seeds
Primula veris

25% off

Primula veris
From £2.24
approx 50 seeds
9cm pot
3 × 9cm pots
6 × 9cm pots
+ 1 more available
1 star 1 star 1 star 1 star 1 star 5.0 5 8 (8)
Verbascum Southern Charm

New

25% off

Verbascum 'Southern Charm'
£4.99 £3.74
approx 10 seeds
Viola odorata

25% off

Viola odorata
From £2.47
approx 50 seeds
9cm pot
3 × 9cm pots
6 × 9cm pots
1 star 1 star 1 star 1 star 1 star 5.0 5 2 (2)
Achillea millefolium

Best Seller

25% off

Achillea millefolium
From £2.24
approx 400 seeds
9cm pot
3 × 9cm pots
6 × 9cm pots
1 star 1 star 1 star 1 star 1 star 5.0 5 2 (2)
Agrostemma githago

25% off

Agrostemma githago
£3.29 £2.47
approx 75 seeds
Viola Vivaldi Beacon

New

Viola 'Vivaldi Beacon'
£4.99
approx 20 seeds
musk strawberry

25% off

musk strawberry
£3.49 £2.62
approx 50 seeds
Johnsons quick lawn seed

25% off

Johnsons quick lawn seed
From £11.24
425g pack | covers 20m²
10kg pack | covers 400m²
20kg pack | covers 800m²
Johnsons tuffgrass lawn seed

25% off

Johnsons tuffgrass lawn seed
From £6.74
425g pack | covers 20m²
10kg pack | covers 400m²
20kg pack | covers 800m²
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)
Antirrhinum majus Madame Butterfly Pink
Antirrhinum majus 'Madame Butterfly Pink'
£4.49 £3.37
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

Seeds to sow outside in September make it easier to choose seeds that fit the way you want to garden. Starting from seed gives you more choice, good value and the satisfaction of watching plants grow from the very beginning. Whether you are filling a few pots, planning a border, refreshing a patch of lawn or growing food for the table, the right seed choice helps you get moving with confidence.

At Crocus, the seed range is carefully selected to support everyday gardeners as well as those with a clear plan in mind. You can explore flower seeds, vegetable seeds, herbs, wildflower mixes, lawn seed and practical growing kits, with product details that help you compare timing, space, colour and conditions before you buy.

Seeds to sow outside in September help you plan your seed trays, pots and outdoor sowing without the guesswork. Use the timing as a simple guide, then check each product page for the best sowing notes before you start.

Order online and have your seeds delivered to your door, ready for your next sowing session. With Crocus expertise behind the range, you can choose popular varieties, plan useful combinations and build a garden that feels more productive, more colourful and easier to manage.

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