Spraying - Weed Control - Garden Maintenance - Bayer Garden

March planner

What to do in your garden in March?

What to do in your garden in March



  • Tidy up cordylines by pulling off the lower faded leaves.
  • Split perennials that have become overcrowded, and increase your stock at the same time. Dig up the whole clump and divide into smaller clumps, discarding the centre if it has weaker growth. For large clumps, use two garden forks, back to back, to ease apart roots. Replant clumps around the garden into soil to which you have first forked in some compost or well-rotted manure.
  • Be vigilant about weeds, pulling up annual seedlings and digging out troublesome perennials such as bindweed and dandelions before they become a nuisance. Use a proper kneeling pad to save your knees.
  • Watch out for snails reappearing after winter hibernation. Look in any hidden spaces where they are likely to colonise, including the sides of flowerpots and planters.
  • If rabbits are a problem in your garden, fix rabbit guards around young trees.



  • Prune shrub roses by removing diseased or weak stems. Cut back by half, to just above an outward-facing bud, aiming for an open, bowl shape.
  • Cut down coloured dogwoods to encourage brightly-coloured new growth.
  • Cut down the dead, woody stems of border fuchsias.



  • Sow tomatoes, aubergines, sweet peppers and chillies in seed trays or modules with gentle bottom heat.
  • Sow carrots in the ground, mixing the seed with spring onion seed which helps deter carrot root fly. Alternatively sow in containers, using the seeds of carrots with shorted, rounded roots such as Parmex.
  • Sow beetroot, peas, salad leaves, spinach, cabbage, parsnip, turnip and seed outdoors once the soil has warmed up.
  • Sow sweet peas in cardboard tubes to accommodate their long roots.



  • Plant onion sets and shallots.
  • Plant tender summer-flowering bulbs under glass.
  • Plant Jerusalem artichokes.
  • Plant lily bulbs into deep containers of soil-based compost for show-stopping flowers this summer. Three reliable perfumed beauties are Liliums Stargazer, regale and Muscadet.
  • For flamboyant flowers this summer, plant one begonia corm per pot in multi-purpose compost; for late summer flowers, plant dahlia tubers now in pots.
  • Pot up strawberry runners cut from plants grown outdoors.



  • Apply a balanced fertiliser around the base of shrubs and roses.
  • Scatter high-potash feed around base of fruit trees and bushes.
  • Apply weedkiller to paths and paving, following instructions precisely and using a designated watering can for the job
  • If roses are vulnerable to blackspot, spray thoroughly now.