Vegetables: Many vegetables can be sown in the greenhouse to obtain an early start. Sowings can be made of Runner and French Beans, Aubergine, Capsicum, Celeriac, Courgette and Marrow. Towards the end of April sowings of Cucumber and Melon may be made. Tomato seed can also be sown now in a warm place which will provide plants for either planting out in early June or growing on in an unheated greenhouse. Herbs can be sown in the greenhouse and many can be sown outdoors. Cauliflower seedlings produced from seed sown earlier may be pricked out and placed in seed trays for growing on so plantings can be made later in spring. Continue to make sowings of Carrot and Lettuce on a regular basis. Second Early Potatoes should be planted during the early part of the month and Main Crop varieties towards the end. Onion Sets, along with seedlings already grown, can be planted in rows remembering to leave enough space so as you can use the hoe for weeding. If Shallots haven't already been planted they should be done so as soon as possible. Leeks can be sown in the nursery bed and then transplanted into their final rows in the summer. Plant Asparagus Crowns in beds that have been prepared well.
Flowers: Seed of half-hardy bedding plants may be sown in trays in greenhouses or on windowsills, pricked out when large enough to handle into individual pots, remembering to water regularly and given a weekly feed. Summer bedding plants raised earlier can be planted into hanging baskets or containers and grown on in the greenhouse until moving outdoors at the end of May/early June, depending on weather conditions. A wide range of hardy annuals can be sown in their flowering positions and these would include Cornflower, Cosmea, Echium, Helichrysum, Limnanthes and Matthiola. Sweet Peas may also be sown outside in their flowering position.Spring flowering plants such as Primroses and Pansies should still be looked after by removing any dead-heads or fading flower-heads to encourage further flowers.
Bulbs:
Begonia tubers can still be planted into pots for growing in the greenhouse, remembering to make sure the concave part of the tuber is uppermost and lightly covered with compost. A weekly feed is recommended and as they grow can be potted on. Towards the end of the month plant Dahlia tubers outdoors, if weather conditions are suitable, with a 10cm (4") covering of soil, however, if it is still cold in your area leave planting until later in the month. To prolong the flowering period of Gladioli plant at intervals. For filling in gaps in the garden, Lilies can be grown in pots enabling you to move them around.
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