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v. de·thatched, de·thatch·ing, de·thatch·es
To remove (dead grass) from a lawn, usually to aerate the soil.
To remove dead grass from a lawn.

de·thatch′er n.


vb (tr)
to remove dead grass from (a lawn)
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References in periodicals archive ?
The Power Lawn Rake's proprietary features allow it to rake and dethatch a lawn with equal efficacy.
Choate plans to aerate and dethatch at the same time, renting the aerator in the morning and the dethatcher in the afternoon.
Late in the month, dethatch and aerate to keep sod healthy.
They can also help cover seed beds, spread fertilizer, dethatch pastures and lawns (root raking) and a host of other chores.
3 Autumn is the best time to dethatch your lawn using a dethatching machine available from rental companies.
Power-rake or dethatch the lawn in early spring before new growth has begun.
The lawn will look a bit rumpled after this process, so be aware that if you dethatch in the spring you will have to live with a disheveled-looking lawn until it recuperates.
Myth: To have a healthy lawn, dethatch in the spring.
To protect dormant lawns in areas where watering is banned, limit foot traffic and do not fertilize, dethatch, or aerate the grass.
If you plan to add seed to your lawn as well, make sure you dethatch before adding seed.
Prep your lawn - At the beginning of the season, aerate and dethatch your lawn to relieve soil compaction and remove excess thatch.
Dethatch, then aerate compacted areas (rent dethatchers and aerators from equipment rental companies).