Cover Crop Plus Summer Mix

Valuable forage for livestock in mixed farming

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A combination of grains, broadleaves and legumes formulated to provide biodiversity and assists in promoting the health of your soil. Providing a blanket of biomass over the soil to ensure water infiltration; nitrogen fixing legumes, protection against soil erosion and suppressing pests and weeds. Biological BioNPK S Coated. ECOCERT APPROVED.

Key attributes

  • Multi-species summer cover blend
  • High biomass for soil cover
  • Nitrogen fixing legume component
  • Attracts beneficial insects
  • Improves soil structure and health

Mix components

Formulation 2025

Component
Cowpeas
Fast growing annual legume known for their heat and drought tolerance providing a great source of added nitrogen fixation and is a very versatile and high-quality summer forage crop for grazing, hay or silage.
Millet
Early summer feed. Quick to establish, high yielding leafy plant producing high quality grazing with good regrowth. A great fibre provider.
Sorghum
Sorghum and improvement providing good weed suppression, adding organic matter back into the soil, can assist by penetrating compacted subsoils. Very strong seedling vigour and recovery after grazing. Soil health benefits with robust root system that assists with
Chicory
A perennial herb and is a drought tolerant option as a perennial pasture for temperate areas of Australia. Chicory possesses a very deep tap root which has been known to break mild hard pans and draw moisture from deep within the soil profile. This taproot allows it to “hang” on well and produce quality forage that has high nutrient and energy levels. Tolerant of grazing pressure and has parasite inhibiting properties. The flowers attract beneficial insects.
Sunflowers
Soil health benefits with robust root system that assists with drawing up nutrients, erosion control and mycorrhizal growth in the soil. Their strong tall stalks offer support for other companion species, and they attract numerous beneficial insects.
Hobsons Forage Brassica
Hobsons Forage Brassica growth are good for weed suppression and is good for reducing surface compaction. Good forage feed.
Winfred Forage Brassica’s large leaf area and rapid growth provide good weed suppression and reduced surface compaction. Versatile and suitable for a wide range of soil fertility and environmental conditions, stock classes and sowing times. Winfred has good frost tolerance and excellent regrowth potential and may extend grazing times from early summer to late winter. Good forage feed.
Tillage Radish
Early summer feed. Excellent cover crop to assist in breaking a compaction layer in the soil. Being deeply rooted it will relocate nutrients further down in the soil profile and bring them back to the surface when decomposition starts. Also produces high levels of biomass, especially below the surface.
Buckwheat is widely grown as a cover crop with rapid and dense growth choking out weeds. Buckwheat is also often grown to attract beneficial insects. Cover cropping serves as a valuable forage for livestock in mixed farming systems and there is a long list of important benefits that include soil health, erosion control, weed suppression, nutrient management, drought resilience, salinity management, pest and disease management, Enhanced Biodiversity,Sustainable integrated cropping systems, Carbon Sequestration in the soil and is one of the criteria earning Australian Carbon Credits (ACCUs). Cover crops provide protection to what may be bare soil for a large portion of the year. By planting a variety of species creates biodiversity providing benefits for the environment. Cover crops improve the soils by covering the soil like a protective blanket of biomass ensuring water infiltration and retention. By mulching the cover crop further benefits are achieved by firstly maintaining the cover for the benefits mentioned above but also adding organic matter and carbon to the soil once decomposed. Planting a selection of different species for a cover crop is the crucial element to provide biodiversity that can assist in promoting the health of your soil.

*Occasionally some varieties in our mix will be replaced with a like-for-like variety where the original is not available or not easily accessible. Varieties in the mix will be specified on the bag label.

About this variety

Cover Crop Plus Summer Mix is an Irwin Hunter blend that does two jobs at once: it produces genuine forage for livestock in a mixed farming system, and it delivers the soil benefits a cover crop is sown for.

That dual purpose is the point of it. A cover crop grown purely for soil is a cost; one that also carries stock through a feed gap pays for itself while it works.

The blend combines species producing high levels of biomass with nitrogen fixing legumes and plants that attract beneficial insects, so the paddock builds organic matter, fixes its own nitrogen and supports the insect populations that help control pests in surrounding crops.

Multi-species blends outperform single-species covers because different root architectures work different parts of the soil profile, and a diverse mix is more resilient to a difficult season than any one species sown alone.

It suits growers wanting summer ground cover on paddocks that would otherwise sit bare, with the option of grazing it rather than only incorporating it.

Planting & grazing notes

Optimal sowing time Spring. Can be grazed, mulched, or left to stand. If grazing, rotate/strip graze to allow recovery. Fast growing annual legume known for their heat and drought tolerance providing a great source of added nitrogen fixation and is a very versatile and high-quality summer forage crop for grazing, hay or silage. Quick to establish, high yielding leafy plant producing high quality grazing with good regrowth. Tolerant of grazing pressure and has parasite inhibiting properties. Winfred has good frost tolerance and excellent regrowth potential and may extend grazing times from early summer to late winter.

How it's sold

FormPackStatus
BioNPK-S coated25 kgIn stock
Cover Crop Plus Summer Mix

FAQs

What can I sow over summer to stop my bare paddock blowing away?

We recommend our Cover Crop Plus Summer mix. It blends grains, broadleaves and legumes to put a blanket of biomass over the soil, protecting against erosion and helping water infiltration. It suits loamy sand to heavy soils with pH 5.0+ and 350mm+ rainfall, and is sown in spring.

What summer cover crop mix builds soil health in WA farming systems?

Our Cover Crop Plus Summer mix combines species for biomass, nitrogen-fixing legumes, soil improvers and plants that attract beneficial insects. It includes cowpeas, millet, sunflowers, 6 Point Chicory, Winfred forage brassica, tillage radish and buckwheat. It is coated with biological BioNPK Powder S and is Ecocert approved.

When do I sow a summer cover crop, and at what rate?

We recommend sowing our Cover Crop Plus Summer mix in spring at 15 to 20 kg/ha. It needs 350mm+ rainfall or equivalent moisture, and suits loamy sand to heavy soils with pH 5.0+. Warm-season species like cowpeas and millet establish best once soils have warmed.

Can I graze a summer cover crop, and how should I manage it?

Yes. Our Cover Crop Plus Summer mix can be grazed, mulched or left to stand. If grazing, we recommend rotational or strip grazing so plants can recover. Brassicas and some summer species can pose animal health risks if stock are introduced suddenly, so bring stock on gradually and seek advice if unsure.

What cover crop helps break up compacted soil over summer?

Our Cover Crop Plus Summer mix includes tillage radish, which has a deep taproot that helps open compacted layers, plus a range of other root types. The mix also adds biomass and nitrogen from legumes. It suits loamy sand to heavy soils in 350mm+ rainfall areas.

Does sowing cover crops count toward carbon credits in Australia?

Cover cropping is one of the practices that can support soil carbon projects that earn Australian Carbon Credit Units (ACCUs), subject to the scheme rules. Our Cover Crop Plus Summer mix is designed to build soil biomass and soil health. We recommend checking eligibility with a carbon adviser before relying on credits.

I want a summer crop that brings in bees and beneficial insects to my farm. What should I sow?

We recommend our Cover Crop Plus Summer mix, which includes flowering species such as sunflowers and buckwheat that attract beneficial insects, along with legumes and brassicas. The diversity supports biodiversity and pest suppression. It flowers over summer and suits 350mm+ rainfall.

What species are in Cover Crop Plus Summer?

Cover Crop Plus Summer currently contains seven species: cowpeas, millet, sunflowers, 6 Point Chicory, Winfred forage brassica, tillage radish and buckwheat. Together they provide biomass, nitrogen fixation, deep roots and flowers for beneficial insects. Earlier versions included sorghum, so check your bag label for the current blend.

Cover Crop Plus Summer vs Cover Crop Plus Winter, which do I need?

Cover Crop Plus Summer is sown in spring and grows through the warm months with species like cowpeas, millet and sunflowers. Cover Crop Plus Winter is sown in autumn with cool-season species such as oats, ryegrass, vetch, peas and clovers. Many growers use both to keep soil covered year round.

Is Cover Crop Plus Summer drought tolerant?

Cover Crop Plus Summer includes cowpeas, known for heat and drought tolerance, and deep-rooted species like tillage radish and chicory. It still needs 350mm+ rainfall or stored soil moisture to establish and grow well. Sowing into good moisture in spring gives the best result.