Keep on taking cuttings until you have made sure that you have sufficient for your needs, although, the back end of April is getting a bit late for the plants to mature fully when planted out. (However, I shall be taking late cuttings this year in an experiment to see how I can further the flowering season by planting out very late in a poly tunnel).
Pot up the rooted cuttings into 90mm pots using a general purpose compost or John Innes No1. Prick out dahlia seedlings as soon as they are big enough to handle and put into trays or pots.
By mid-April some of the early cuttings will now be getting well ahead in their 90 mm pots; it's time to pot them on into 125 mm pots so that their growth is not set back. Especially important if you have bought ex-pot plants from a commercial grower.
Keep the hygiene programme going! Any plants found to be diseased should be destroyed (burnt) as quickly as possible to prevent spread.
Plant out divided tubers about the middle of April.
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