![Māori gardeners sometimes modified soil called plaggen soil](http://static.sciencelearn.org.nz/images/images/000/000/989/full/Modified-soil20160315-11152-1eweeqg.jpg?1674165242)
Māori gardeners sometimes added sand and gravel to soil to improve its drainage, making the soil ideal for kūmara. The modified soil is known as a plaggen soil.
Māori gardeners sometimes added sand and gravel to soil to improve its drainage, making the soil ideal for kūmara. The modified soil is known as a plaggen soil.