Roehampton Garden Society

April jobs on your allotment

April Plot

  • Draw up soil around the base of peas and broad beans to support them and increase the rooting area.
  • Plant early potatoes when chits are 2cms long.
  • Earth up early potatoes when they have made 8” growth.
  • Second early and maincrop potatoes should be sown by the end of the month.
  • Clean greenhouse glass to improve light levels.
  • On sunny days ventilate the green house by morning opening and close late afternoon to conserve the heat.
  • Avoid damping off in seedlings with good ventilation and not overwatering.
  • Make a late sowing of broad beans and sow early peas.
  • Make succession sowings of beetroot, Swiss chard, lettuce, radish, summer spinach, spring onions, parsnips and turnips.
  • Sow early varieties of carrot when the ground has warmed up.
  • Sow indoors or in the greenhouse Brussels sprouts, cabbage, early leeks, cucumbers, courgettes and peppers and sweet corn. Seeds available in store.
  • Once tomatoes have their first true leaves, plant them deeply into individual pots
  • Sow tomatoes for outdoors.
  • Water crops regularly in dry weather.
  • As weather warms make an early sowing of climbing or dwarf beans to transplant next month. Root-trainers available in the Store are ideal.
  • At the end of the month sow tender vegetables indoors, such as runner beans, squash and pumpkins.
  • Sow herbs, dill, fennel and parsley from seed.
  • Harvest rhubarb by pulling a few stalks at a time. Put the leaves on the compost heap.
  • Plant out autumn-sown sweet peas or direct sow outdoors.
  • Finish planting shallots. Available in store.
  • Plant soft-neck garlic.
  • Plant up new asparagus and globe artichoke beds.
  • The first cutting of asparagus is traditionally made after St George’s Day, 23rd April and the last cutting on the longest day, 22nd
  • Weed ‘defensively’; remove weeds before they flower to avoid seeding.
  • Cover radishes and turnips with horticultural fleece to protect against flea beetle.
  • Watch out for early aphid attacks. Quick action by manually removing these or hard- spraying with water can reduce likelihood of damaging infestations.
  • Feed roses with rose feed.
  • Once leaf buds open, start formative pruning of plum and cherry trees.
  • Use fleece to protect blossom of trees such as pears if frost is forecast.
  • Sow annuals to attract pollinating insects such as Nigella, single flowered marigolds, Comos, Caliphonian poppies, oregano and thyme.
  • Keep grass paths manageable by regular cutting.
    • A strimmer is available to borrow in the store. Charge £1.00. Email to book.
    • Lawnmowers (fee to borrow) are stored in the toilets on both sites.

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