Propagating Tasks in April
Like last month, this is another busy month, with many varieties of plants needing propagating.
Having said that, err on the side of safety, and keep your seedlings in a frost free environment if weather predictions are for continuous cold / freezing weather.
Keep a piece of agri-fleece at hand to throw over your seedlings in the coldframe if an overnight frost is forecast.
Week 14 - 2nd Apr. to 8th Apr.
Sow African Marigolds, Basil, Cabbage (summer), Calendula, Canterbury Bells, Centaurea, Cerinthe, Chrysanthemum annuals, Clarkia, Coleus, Cosmos, Cytisus, French Marigolds, Godetia, Gunnera, Helianthus, Helleborus, Iberis, Impatiens balsamina, Kniphofia, Lathyrus / Sweet Peas, Leeks, Loosestrife, Lunaria, Nerium, Onions (spring), Orache, Phlox paniculata, Sidalcea and Tagetes.
Prick out Alyssum, Antirrhinum, Arthropodium, Calabrese, Cauliflower (summer) Celery, Chilli, Convolvulus, Hebe, Limnanthes, Melon, Mimosa, Pansy, Portulaca, Potentilla, Schizanthus and Sweet Peppers if large enough to handle.
Propagate Suckers from various shrubs / trees.
Commence Chrysanthemum stopping programme.
Week 15 - 9th Apr. to 15th Apr.
Prick out African Marigolds, Actinidia, Agrostemma, Anomatheca, Aubretia, Auricula, Broad beans, Begonia, Brachycome,Callistephus, Celery, Crepsis, Echinacea, Eschscholtzia, French Marigolds, Impatiens balsamina, Laurentia, Mesembryanthemum, Nemesia, Nicotiana, Nolana, Papaver / Poppy, Physostegia, Rudbeckia, Tagetes, Thyme and Verbena seedlings if large enough to handle.
Pot up Sweet potato slips immediately on receipt.
Remove growing tip from Petunias.
Sever layered Blackberry ,Loganberry and Tayberry cuttings.
If weather conditions are suitable, divide established Aquilegia plants and replant the divisions immediately.
Week 16 - 16th Apr. to 22nd Apr.
Sow Alyssum, Bidens, Borage, Cactus, Carrots, Chionodoxa, Chives, Crocus, Echium, Fatsia japonica, Gourds, Hesperis, Lavatera, Lavender, Lupin, Oxalis, Parsley, Peas, Pumpkin, Squash and Watermelon seed.
Prick out Ageratum, Aquilegia, Basil, Cabbage (summer), Calendula, Canterbury Bells, Centaurea, Cerinthe, Chrysanthemum annuals, Clarkia, Cosmos, Dianthus chinensis, Godetia, Helianthus, Iberis, Mimulus, Orache, Phlox drummondii, and Tropaeolum / Nasturtium if large enough to handle.
Week 17 - 23rd Apr. to 29th Apr.
Sow Beetroot, Cabbage (autumn), Catananche, Chicory, Coriander, Courgette, Cucumber, Endive, Freesia, French beans, Kohl rabi, Linaria, Marrow, Pulmonaria, Rosemary, Runner beans, Sage, Spinach and Sweet Corn.
Plant out early sowing of Spring Onions and cover with cloches.
Cut off faded Sedum flower heads down to ground level if not done previously.