Description
OSC Wildflower Seed Mixture 6830.
Our Premier Signature Blend of Proven Annuals, Perennials, and Biennials.
The OSC Wildflower Seed Mixture is our signature, time-tested combination of popular wildflower varieties selected for maximum garden performance, continuous bloom, and rich colour contrast. Reaching an average flowering height of 60 to 90 cm, this open-pollinated blend brings together self-seeding annuals for vibrant first-year impact, long-lived perennials for returning beauty, and hardy biennials to bridge the seasons. It creates a lush, low-maintenance meadow effect that supports local bees, butterflies, and beneficial garden wildlife.
Quick Seed Details
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Product Code: 6830
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Type: Open-Pollinated Mixture of Annuals, Perennials & Biennials
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Coverage: 1 pkt sows approx. 3–5 m² (Large scale: 125 g per 90 m² or 9.5 kg per hectare)
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Average Height: 60–90 cm
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Light Requirement: Full Sun
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Blend Composition:
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Annuals (A): Alyssum Carpet of Snow (Lobularia maritima), Annual Chrysanthemum (Glebionis coronaria / Chrysanthemum coronarium), Baby’s Breath (Gypsophila elegans), Bachelor’s Buttons (Centaurea cyanus), Calendula Pacific Beauty (Calendula officinalis), Cosmos Sensation (Cosmos bipinnatus), Flanders Poppy (Papaver rhoeas), Scarlet Flax (Linum grandiflorum).
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Perennials (P): Black-Eyed Susan (Rudbeckia hirta), Catchfly (Silene armeria), Lance Leaf Coreopsis (Coreopsis lanceolata), Evening Primrose (Oenothera lamarckiana), Gloriosa Daisy (Rudbeckia hirta var. pulcherrima), Plains Coreopsis (Coreopsis tinctoria), Prairie Coneflower (Ratibida columnifera), Purple Coneflower (Echinacea purpurea), Rocky Mountain Penstemon (Penstemon strictus), Russell Lupins (Lupinus polyphyllus / Lupinus russell), Soapwort (Saponaria sp.).
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Biennials (B): Wallflower (Erysimum cheiranthoides / Cheiranthus allionii).
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What you need to know to Plant & Grow
Establishing our signature wildflower mixture requires basic site preparation and proper timing.
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Best Sowing Windows:
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Late Fall (Mid-Sept. – Late Oct.): Highly recommended. Natural winter freeze-thaw cycles provide natural cold stratification for dormant perennial seeds.
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Early Spring (Late March – Early April): Delivers a brief cold treatment prior to spring soil warming.
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Late Spring (Early May – Mid-June): Direct sow once soils have warmed up after spring frosts.
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Site Preparation: Thoroughly clear weeds from the area. Loosen the top 2.5 cm of soil using a rake, cultivator, or hoe—seeds establish much better in loose, well-drained soil than in compacted topsoil.
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Sowing: Broadcast seeds evenly over the prepared bed. Mixing smaller seeds with dry sand ensures even distribution. Natural forces like rain, snow, and frost-heaving will gently settle seeds into the soil.
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Maintenance: Irrigate consistently during the first growing season while plants establish deep roots.
Why this OSC Mixture belongs in Your Garden
If you want a dependable, all-in-one wildflower blend that delivers dependable performance year after year, this signature mixture is an ideal choice. Combining fast-blooming annuals for immediate summer colour with hardy perennials that bloom year after year from their second season onward, it creates a self-sustaining landscape filled with non-stop colour and buzzing pollinators.
