Propagating Tasks in May
The bulk of the propagating tasks under glass will be nearing completion now, apart from perhaps some pricking out, and potting up of of late sowings and cuttings.
However! this does not necessarily mean it is the end of propagating, as the soil outdoors will be beginning to warm up now thus allowing propagation to take place by means of Insitu sowings and Plant division.
Week 18 - 30th Apr. to 5th May.
Sow Agrostemma, Broad beans, Crassula, Echevera, Lettuce, Pak choi, Physalis, Savoy, Sedum and Zinnia seeds.
Prick out Agapanthus, Bidens, Borage, Cabbage (autumn) Coleus, Courgette, Cucumber, Echium, Gourds, Lavatera, Leeks, Leontopodium, Marrow, Platycodon, Pulsatilla, Squash and Sweet Corn seedlings if large enough to handle.
Take Campanula, Dicentra, Fatsia japonica, Gloxinia, Loosestrife, Lychnis, Pleione, Potentilla and Thyme cuttings.
Divide Crepsis, Dahlias, Mint, Platycodon and Thyme if required.
Layer Magnolia, Rosemary, Sage and Thyme.
Pot on rooted Bacopa, Clematis, Deutzia, Eleagnes, Garrya, Genista, Hibiscus, Philadelphus and Pieris cuttings.
Place Basil, Dahlia, Eucalyptus, Godetia seedlings / cuttings in Coldframe to Harden off.
Check progress on Laburnum cuttings taken the previous year.
Week 19 - 6th May. to 12th May.
Prick out Achillea, Calceolaria, Chive, Coriander, French bean, Lavender, Linaria, Oxalis, Runner bean, Savoy and Zinnia seedlings.
Place Gaillardia and Leeks in Coldframe to Harden off.
Week 20 - 13th May. to 19th May.
Sow Auricula, Fennel, Gaillardia, Parsnip, Poinsettia and Runner bean seeds.
Collect and sow Fern spores.
Prick out Alstroemeria, Azalea, Kohl rabi and Passiflora if large enough to handle.
Take Brugmansia, Datura, Gerbera, Gunnera, Hypericum and Mint cuttings.
Divide and replant Agapanthus, Ajuga, Dierama, Eucomis, Pulmonaria and Saxifrage if deemed necessary.
Layer Azaleas if required.
Place Chilli seedlings in Coldframe to Harden off.
Pot up rooted Buxus, Ceanothus, Choisya and Escallonia cuttings.
Pot up Cistus and Lunaria seedlings.
Week 21 - 20th May. to 26th May.
Sow Parsley and Pea seeds.
Pot up Agrostemma and Albizia seedlings.
Pot up Carnation and Lonicera cuttings.
Divide Papaver / Poppy.
Propagate Tulips by removing offsets / bulbils from mature bulbs.
Week 22 - 27th May. to 2nd Jun.
Sow Pak choi thinly into drills.
Prick out Hesperis if large enough to handle.
Now is a good time to propagate Ficus and Streptocarpus.
Place Eucalyptus seedlings outdoors to Harden off.
Pot up rooted Potentilla cuttings.