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Sunn Hemp
Legume
Image Source: 1
Image Source: 2
Estimated Cost
$1.51
($/lb)
Planting Window
Summer seeded
Best for
, and undefined
Alternate Species
Cowpea, Forage Soybean, Mungbean
1. Tom Lawler 2021, Indigo Agriculture.
2. © Zach Larson 2020, CC BY-ND 4.0 <https://creativecommons.org/licenses/by-nd/4.0/> via https://covercrop.tools/images/Cover%20Crop%20Photos/Sunn%20Hemp/Sunn_hemp_flowering_Larson_2020.jpg
Seeding Detail
Sunn Hemp
15.0
30.0
20.0
Additional Information
Why We Recommend This
Sunn hemp produces the largest nodules of any summer annual legume. Sunn hemp reduced compaction concerns with its large taproot, reduces nematode populations, increases soil organic matter, and fixes N well. Sunn hemp's woody stalk provides long lasting, above-ground carbon which lets microbes feed longer. It also does well in low fertility, sandy soils and creates lots of biomass in a short period of time.
Things to Watch Out For
Sunn hemp needs a warm climate and must be planted at least 45 days ahead of the first frost. It is not a great grazer because of the woody stem. Cows will only eat the leaves. Avoid using for hay.
Neither Indigo nor any of its affiliates makes any representations, warranties or guarantees as to any specific results or outcomes, including, without limitation, with respect to soil health outcomes or any minimum amount of greenhouse gasses sequestered or number of carbon credits generated. Participation in Carbon by Indigo is subject to the terms, conditions and limitations of the program contained in the applicable enrollment agreement. Any payments under Carbon by Indigo are subject to multi-year vesting and are contingent on continued long-term maintenance of regenerative agricultural practices and soil carbon levels. All Carbon Credits generated are subject to buffer pool holdbacks required by third-party crediting; participants will not receive payments for such holdback. Not available in all areas.
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