Gardener example sentences

Have you seen farmers spreading manure or fertilisers in the fields, or gardeners using them in lawns or in pots? Do you know why they are added to the soil? You learnt that plants absorb mineral nutrients from the soil.You may find that these activities are similar to those carried out by a gardener or even by you when you grow ornamental plants in your house.It is used to prepare weed-free lawns by gardeners.