Gardening Tasks for March

March is a funny month in the garden – sometimes it can feel like the start of spring, other years it seems like we’re still in the depths of winter. Even if it seems spring-like don’t get carried away and rush into planting seeds as we’re certainly not out of the woods yet. However, there are many gardening jobs to be getting with on days when the weather permits.

• Plant daffodils “in the green” and dead-head them as the flowers fade to keep them vigorous for next year.
• Plant out hardy summer flowering bulbs such as lilies, crocosmias, nerines and galtonias in containers or in the ground.
• Towards the end of the month you can finish pruning roses by cutting them back hard to a healthy bud. Overgrown climbing and rambling roses can have whole stems pruned to encourage new growth and flowering lower down the plant.
• Dogwoods and willows can also be hard pruned at the same time to encourage attractive new growth.
• Mulch newly pruned roses with a good layer of well-rotted farm yard manure
• Cut back Jasminum nudiflorum (Winter Jasmine) to keep it under control
• Mulch around alpine plants with horticultural grit
• Feed acid-loving (ericaceous) plants such as rhododendrons, azaleas, camellias and pieris with an ericaceous fertiliser and then top-dress with ericaceous compost to maintain the acidity levels of the soil.
• Apply fertiliser such as Growmore or organic pelleted chicken manure to all non-ericaceous garden plants
• Continue tidying and weeding borders taking care not to stand on emerging bulbs
• Plant new trees and shrubs and check tree ties and stakes on existing plants
• Weed around the base of trees leaving about 1m diameter clear of grass and weeds
• Continue dead-heading spring flowers and winter bedding
• Spring clean your greenhouse using a fumigator if necessary and check that the heaters are working
• Pot up overwintering cannas into fresh compost and leave indoors until the frosts finish
• Sow wildflowers in seed trays or modules indoors
• Sow sweet peas into Root-trainers or deep pots indoors
• Plant onion and shallot sets see our handy guide on our website
• Plant Jerusalem tubers, asparagus crowns, soft fruit bushes and rhubarb plants
• Start preparing vegetable beds by weeding and hoeing
• Cut down winter grown green manures, and dig them into the soil
• Start planning a new pond to encourage wildlife and to add a whole new habitat for moisture loving and water plants
• Protect emerging Hostas, Delphiniums and other vulnerable plants from slugs using slug pellets or organic wool pellets
• Replace or repair any winter damaged plant supports and trellising
• Use a patio brush to clean between paving and Jeyes fluid to clean hard paths and patios
• Keep feeding garden birds