Tasks in May

Flower garden

Deadhead flowering bulbs.
Stake perennials.
Protect emerging lilies from frost.
Plant out cannas and dahlias after danger of frost past.
Harden off plants raised from seedbefore planting out.
Complete plantng of summer flowering bulbs.
Sow biennials such as wallflowers for transplanting in autumn.
Plant up baskets/pots with tender annuals/perenials.

Trees and shrubs

Clip evergreen hedges.
Prune spring flowering shrubs after flowering.
Propogate hydrangeas and other shrubs from softwood cuttings.
Divide and transplant bamboos.

Lawns

Sow new lawns as weather warms.
Begin weekly mowing.
Apply high nitrogen summer fertizer.
use selective weed herbiside if necessary.