Triple Cereal Carbon Builder & Weed Suppressor
NOT to WA & TAS
Glycine max, Vigna radiata, Helianthus annuus, Helianthus annuus, Fagopyrum esculentum, Panicum miliaceum
Suitable for: All gardeners needing fast biomass, weed suppression before planting, winter cover crop, organic farmers, market gardeners (cool-season bed prep), orchardists (winter alleyway cover), and new garden preparation
Sowing rate: Garden beds: 80–120 g/sqm (1 kg covers 8–12 sqm). Paddocks: 80–100 kg/ha. Maximum weed suppression: 120–150 g/sqm.
Season: Cool-season product. All three species grow best at 10–20°C. Tolerate frost. Growth slows above 25°C. In tropical zones, sow during the dry/cool season only. Best Mar–Aug (cool season). Can sow Feb–Oct in most zones.
Contains: Oats, Wheat, Barley.
This is your dedicated cereal cover crop - three species, one job: build carbon, suppress weeds, and protect soil through winter.
Why a separate cereal product? Wheat, barley, and oats are kept isolated from all other mixes in this range. This means you can sell them as a standalone winter cover crop product - the fastest-moving seasonal item in the cover crop category - without any crossover into your longer-shelf-life legume and brassica products.
What cereals do that no other cover crop can: allelopathy. All three species release chemical compounds from their roots that actively suppress weed seed germination - reducing weed pressure for your next cash crop by up to 50–70% compared to bare fallow. This is a scientifically documented effect that no legume, brassica, or broadleaf cover crop can replicate.
Oats are the biomass champion, producing the most above-ground material for mulching. Wheat produces the densest root mat for soil structure. Barley is the most drought-tolerant and has the strongest allelopathic effect. Use the Triple Cereal in autumn–winter, then follow with warm-season products in spring–summer for year-round soil building.
Sowing Instructions
1. Best sown March–August (cool season) when soil temperature is 8–20°C.
2. Prepare bed by removing spent summer crops. Light rake to create seed bed.
3. Broadcast at 80–120 g/sqm (heavy rate for maximum weed suppression and biomass).
4. Rake to 2–3 cm depth. Water in if no rain expected within 48 hours.
5. Germination in 5–7 days. Dense canopy closure within 3–4 weeks.
6. Allow to grow 8–12 weeks. For maximum carbon: let grow until early grain formation.
7. For weed suppression: slash at boot stage (just before seed heads emerge) when allelopathic effect peaks.
8. Terminate by: (a) slashing and incorporating, (b) crimp-rolling for no-dig (excellent as a rolled-down mulch mat), or (c) mowing and leaving as surface mulch.
9. If incorporating, wait 2–3 weeks before planting. The high C:N ratio means nitrogen tie-up is possible - follow with a nitrogen-fixing crop (Products 2, 4, or 9).
10. For continuous soil building: Triple Cereal (autumn–winter) → Quick Flip or Summer Builder (spring–summer) → repeat.
