Buff Cowpea

Drought and heat tolerant summer forage legume

Vigna unguiculata

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An annual summer forage legume with a spreading growth habit that is tolerant of both drought and heat. Buff cowpeas can be used to fatten cattle and sheep, or as a green manure crop to improve soil nitrogen levels, and they produce quality hay or silage especially in a mix with forage sorghums or millet. They grow in a variety of soils but do not like being waterlogged.

Key attributes

  • Good drought and heat tolerance
  • Excellent source of nitrogen in summer rotations
  • Good companion legume with millet and sorghum
  • Adds protein to silage and hay
  • Excellent green manure crop
  • Does not tolerate waterlogging

About this variety

Buff is a cowpea, an annual summer forage legume with a spreading growth habit, and it is one of the more useful legumes for the warm season.

Cowpeas tolerate both drought and heat, which is what suits them to summer country where a temperate legume would fail, and they can be used in several ways: fattening cattle and sheep, as a green manure to lift soil nitrogen, or cut for hay and silage, particularly in a mix with forage sorghum or millet where the legume lifts the protein of a grass-dominant crop.

That companion role is where cowpeas are most often used. A summer grass crop grown alone is bulky but low in protein; a cowpea component raises the quality of both the standing feed and the conserved product.

They grow on a variety of soils but will not tolerate waterlogging, so drainage matters more than fertility.

Seed should be inoculated with group I inoculant before sowing to ensure nodulation and nitrogen fixation, without which most of the benefit is lost.

Planting & grazing notes

Sow when soil temp reaches 16°C, needs 25-35°C to grow and good soil moisture; inoculate with Group I; row spacing 18-35cm for 9-13 plants/m²; light grazing recommended for regrowth; responds well to P, K, S fertiliser. Cowpeas were released to Australia as a grazing type of cowpea suited to subtropical coastal areas with medium rainfall or in areas with irrigation but does not like to be waterlogged.

Disease & pest resistance

Susceptible to Phaseolus and root rot fungus; susceptible to frost

How it's sold

FormPackStatus
Bare25 kgIn stock
Buff Cowpea

FAQs

What summer legume can I grow for sheep and cattle feed that handles heat and dry spells?

We recommend Buff Cowpeas. They are an annual summer forage legume that tolerates drought and heat, and they can be used to fatten cattle and sheep. They suit areas with 500mm+ rainfall or irrigation and a wide range of soils, although they don't like waterlogging. Sow at 15–20 kg/ha once soil temperatures reach 16°C.

How deep and how thick should I sow Buff cowpeas?

Sow Buff Cowpeas 3–5cm deep at 15–20 kg/ha, using 18–35cm row spacings to target 9–13 plants per m². Wider rows give livestock better access and reduce trampling. Inoculate the seed with Group I inoculant before sowing, and wait until soil temperatures reach 16°C with good moisture. The seed is large, at about 5,000 seeds per kg.

What can I mix with forage sorghum or millet to lift the protein in my summer silage?

Adding Buff Cowpeas is a good way to do it. Cowpeas are a good companion legume for our Bounty Sorghum and Shirohie Millet, and their higher protein lifts the quality of the hay or silage. They also fix nitrogen for the following crop. Inoculate with Group I and sow once soil temperatures reach 16°C.

I want a summer green manure to put nitrogen back into my soil before the winter crop, what do you suggest?

We recommend Buff Cowpeas. As a summer legume, they fix nitrogen when inoculated with Group I and make an excellent green manure. They are easy to establish, grow in a range of soils and tolerate drought, though not waterlogging. They need warm conditions, ideally 25–35°C, and 500mm+ rainfall or irrigation. Incorporate them around flowering, 49–55 days after sowing.

How hard can I graze a summer cowpea crop?

We recommend light grazing of Buff Cowpeas so the plants can regrow. Heavy or low grazing can knock the crop out. Wider rows of 18–35cm help stock move through with less trampling. Buff responds well to phosphorus, potassium and sulphur, so good nutrition supports regrowth. Cowpeas are frost tender, so use the feed before the first frosts.

Will Buff cowpeas cope with a wet, waterlogged paddock?

No, Buff Cowpeas don't like to be waterlogged, so we recommend sowing them on free-draining ground. They grow in a wide variety of soils and have good drought tolerance, but wet feet and root rot fungus can set them back. On heavier, wetter ground, talk to us about our Ebony Cowpeas, which have better root disease resistance.

When is it warm enough to plant summer legumes in WA?

For Buff Cowpeas, wait until the soil temperature reaches 16°C and there is good soil moisture. The crop grows best at 25–35°C. In most of WA, that means mid to late spring through early summer, depending on your district. Cowpeas are susceptible to frost, so avoid sowing while there is still a frost risk.

Is there a summer crop I can grow for both grain and grazing?

Buff Cowpeas are a dual-purpose option for grain and forage. They produce high seed yields, and both the seed and the plant have high nutritive value and palatability. The pods hold about 11 buff-coloured seeds. Buff flowers 49–55 days after sowing, suits 500mm+ rainfall or irrigation, and should be sown at 15–20 kg/ha.

Buff vs Ebony cowpeas, what's the difference?

Both are annual summer forage legumes that fix nitrogen and pair well with millet and sorghum. Buff Cowpeas are an erect type that flowers 49–55 days after sowing and produces high seed yields. Our Ebony Cowpeas have a long production season and resistance to races 3 and 4 of Phytophthora root rot, which suits wetter or disease-prone ground.

Are Buff cowpeas safe for sheep and cattle?

Yes, Buff Cowpeas are used to fatten both cattle and sheep and are highly palatable. Cowpeas are generally considered a low bloat risk forage, but we still recommend introducing stock gradually and watching young sheep closely. Graze lightly to allow regrowth. Some cowpea types have been linked to photosensitivity in young sheep. For hay or silage, mix them with sorghum or millet.