Bring a burst of colour and wildlife-friendly charm to even the smallest spaces with the Conservation Windowbox 100% Mix Wildflower Seed. This specialist mix has been created for compact planting areas such as window boxes, balcony pots, patio planters, and small raised beds. Designed using 100% UK native wildflower species, the blend includes carefully selected varieties that are low-growing, visually striking, and beneficial to bees and pollinators.
Species such as Sea Campion, Daisy, Forget-me-not, Wild Pansy, Wild Strawberry, and Thrift offer a delightful array of soft colours, seasonal interest, and textures, while flourishing in shallow soils and container environments. Many of these varieties have trailing or clumping habits, helping create naturalistic and abundant displays in small garden spaces. Perfect for urban environments, schools, care homes, and pollinator initiatives, this mix brings the wild into reach — no meadow required.
The Conservation Windowbox Mix is ideal for those looking to support biodiversity with limited ground space, and it's equally suited for children’s nature projects or compact sensory gardens.
Please note: All wildflower mixes are subject to seasonal change depending on harvest and availability. Additional UK native species may be included as needed.
Features & Benefits
100% UK native wildflower mix for small spaces
Ideal for planters, window boxes, and pots
Supports pollinators and urban biodiversity
Compact, attractive species with long flowering season
Low-maintenance and easy to grow
Applications
Window boxes and hanging baskets
Balcony and patio containers
Small urban gardens or courtyards
Raised beds and borders
School wildlife projects and sensory gardens
What’s in the Mix?
Sea Campion (Silene uniflora) – trailing, delicate white blooms, salt-tolerant
Daisy (Bellis perennis) – classic flower of UK lawns, low and cheerful
Forget-me-not (Myosotis arvensis) – soft blue flowers, early spring to summer
Wild Pansy (Viola tricolor) – tricolour blooms with spreading habit
Wild Strawberry (Fragaria vesca) – edible fruit and charming white flowers
Thrift (Armeria maritima) – pink globe flowers, compact and tough
Subject to seasonal variation. Other suitable native species may be included where appropriate.
Sowing Rate
2–3g per m²
For pots: roughly 1–2g per 30cm planter
Sowing Period
Spring (March–May)
Autumn (August–October) – allows overwintering for early flowering
How to Sow
Fill window boxes or containers with low-nutrient compost or soil
Lightly firm the surface and scatter seeds evenly across the top
Lightly press or rake seeds in, ensuring surface contact (do not bury deeply)
Water gently and place in a sunny or lightly shaded position
Keep moist during germination; avoid waterlogging
Do not fertilise – wildflowers thrive in nutrient-poor soils
Technical Advice
Best grown in shallow containers or raised beds with well-drained soil
Prefers full sun but tolerates partial shade
Suitable for coastal areas due to species like Thrift and Sea Campion
After flowering, trim plants back and remove any excess growth to encourage self-seeding
Refresh sowings annually for best display in containers
About John Chambers Wildflower Seed
With over 40 years of expertise, John Chambers Wildflower Seed is one of the UK’s most established and trusted suppliers of native wildflower seed. The brand is synonymous with conservation, biodiversity, and habitat creation, supplying seed to professionals, landowners, and community projects nationwide. All seed mixes are developed with UK provenance, ensuring they contribute positively to local ecosystems while delivering exceptional performance in gardens, public spaces, and rewilding schemes. By choosing John Chambers, you're supporting native wildlife and preserving Britain’s natural beauty for future generations.

Component Details
Species Content 100% UK native wildflowers
Seed Origin Sourced and mixed in the UK
Recommended Sowing Rate 2–3g per m² or 1–2g per 30cm container
Soil Type Low fertility, free-draining compost or loam
Aspect Full sun to light shade
Flowering Period Spring to early autumn
Sowing Period March–May or August–October
Wildlife Benefit Supports bees, butterflies, and insects
Minimum Order 100g
Notes Mix may vary seasonally for supply consistency