April is here, and spring has sprung!Here are some top jobs in the garden for this month;Aerate the lawn by spiking it with a garden fork, or a use a lawn aerator.Mow your lawn more regularly as required, lower the cutting height towards the end of the month.Feed shrubs and trees with a fertiliser such as Growmore, by lightly forking it into the soil.Divide primroses once they have finished flowering.Trim winter-flowering heathers once the flowers disappear.Deadhead daffodils and tulips as the flowers finish, leaving the foliage to die back naturally. Feed fruit trees, bushes and raspberry canes.Sow hardy annuals, herbs, and wild flower seed outdoors. Cut back summer and autumn fruiting raspberries to approximately 23cm (9in) from the base.