Trish Hoff
March 20th – Spring’s Return
With spring at hand, it’s time to put plans into action.
Gardeners are anxious to get out in the warmer weather and the lengthening days but remember to warm up your muscles before you begin any heavy work. It may have been a while since some of us have had a strenuous workout. You don’t want to ruin your springtime enjoyment with the miseries of a sore back.
Indoor Plants
Plants are coming out of dormancy and starting to put on new growth. Increase water and start fertilizing at half strength by the end of the month. Check plant roots and re-pot severely root-bound houseplants. Increase pot size by only a few cm at a time. Many houseplants will fail in too large a pot.
Replace the top 2 to 3 cm of soil in plant pots with fresh compost or potting soil. Leave 2 to 3 cm of freeboard above the soil in the pot to allow for easier watering.
Bring plants such as pelargonium (geraniums ), fuchsias, and summer bulbs out of storage.
Start cuttings from overwintering tender plants.
Bulbs
Early spring bulbs are emerging.Deadhead and fertilize them as they finish flowering but do not remove the foliage until it turns yellow.
Mark the position of the bulbs and make notes of where you wish to make improvements in the fall. Taking pictures will help you remember where to add new bulbs and where not to dig next fall.
Pot up tender summer-flowering bulbs such as dahlias, begonias, lilies, alocasias and callas to get them started into growth.
Water and fertilize leafy amaryllis for next year’s bloom.
Containers
Freshen up containers of spring bulbs; remove any tired winter materials and add spring flowers. Keep pansies deadheaded and compact.
Replace the soil in the top 5cm of the container with fresh compost. Leave enough space to water the container.
Perennials
Divide and relocate perennials and plant new nursery stock.
Train vines and climbers as they begin growing. Prune clematis as required.
Annuals
Sow tender annuals indoors and hardy annuals indoors or directly into the ground. Check the seed packages or catalogues for correct planting times and instructions.
Trees and Shrubs
Cut branches from early flowering trees and shrubs such as forsythia, quince (chaenomeles) cherry (prunus) and pussy-willow (salix) to force into bloom indoors.
Spray dormant oil on flowering and fruiting trees, before flower or leaf buds open, to kill overwintering insect pests such as aphids and scale.
Remove any burlap wraps from shrubs but leave roses mulch-protected until forsythia is ready to bloom.
Wait until after the shrubs flower to prune early flowering trees and shrubs.
If you need to drastically reduce overgrown shrubs, now is the time. Hard pruning in spring will stimulate bud growth in old wood.
Prune roses when the forsythia bloom; and complete pruning of fruit trees.
Prune red and yellow-twig dogwood shrubs (cornus sericea, alba etc.) to the ground for best stem colour in fall.
Remove winter damage on evergreens, mulch with compost or well-aged manure.
Planting a new tree? How high will it grow and will it interfere with overhead hydro and telephone wires when it reaches its mature height? It may be cute and small now but what is it going to be in ten years?
Lawns
Rake turf areas when dried to remove moss or thatch, then aerate, fertilize and top dress.
Repair damaged areas, edge and lime established lawns.
Overseed thin patches if necessary.
Vegetables, Fruits and Herbs
Tidy up established herb plantings and sow annual herbs.
Feed and mulch rhubarb and berry plants or start new plantings. Prune raspberry canes.
Dig in cover crops if you haven’t already. Leave for two weeks before planting for weed seeds to germinate. Add lime now and wait at least two weeks before adding any fertilizers.
Weed beds then improve the soil with compost, sea soil/well-aged manure or organic fertilizer beginning new crops.
Plant cold season crops such as lettuce, radishes, broad beans, spinach, Chinese vegetables, turnips and onions and peas with row-covers or cold-frame protection if necessary.
Harvest winter crops as they mature and before they bolt as temperatures rise.
Pest Control
Keep up the patrol to eradicate slugs, snails and weeds.