Kell, S.P.; Knüpffer, H.; Jury, S.L.; Ford-Lloyd, B.V.; and Maxted, N., 2008. 'Crops and Wild Relatives of the Euro‑Mediterranean Region: Making and using a conservation catalogue', in Crop Wild Relatives Conservation and Use, Maxted, N. et al. (eds).
Let the grass grow higher and thus encourage root growth. It will also allow the grass to self-seed. If you mow a path in the middle, it will show that it is indeed meant to be that way as opposed to being neglected.
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