As the days get longer and the soil temperature rises, established plants and seedlings will grow faster, while seeds sown now are almost sure to germinate.
Green beans and butter beans can be sown outdoors. Place the seeds individually, about six inches apart and two inches deep.
Spanish beans for growing trellises or on frames can also be sown now in a sunny location.
Smaller cucumber varieties (lemon, true lemon) can be sown in rich soil, but in cooler areas these and other cucurbits, including zucchini (zucchini), are best grown from purchased plants. in a garden center.
The asparagus can be harvested now and the spears can be taken within the next month. If this is the first season for your asparagus, avoid picking up shoots so that the root system can develop. This self-discipline will pay off in years to come with more larger stems to pick. When picking up spears, break them off as close to the base as possible, being careful not to damage the new buds around them. Add a general fertilizer, at a rate of 100 g per m², before the start of the harvest, then liquid manure regularly for the rest of the growing season. Established asparagus beds can produce for 15 to 20 years, which makes the initial expenditure on plants (crowns) or seeds very attractive.
Sweet corn can still be sown. Choose a faster maturing variety, such as Florida Supersweet, and sow in groups of six to eight plants, 15cm apart in each direction, to promote fertilization. Plants need shelter from cold winds and lots of compost and lime. Corn also needs potash, which promotes growth and increases resistance to disease. Apply 45g per m² before planting.
Peas, lettuce, carrots, spring onions, radishes and turnips can still be sown for succession crops.
It’s a busy month in the flower garden.
For better flowers, it is worth adding some well-rotted compost and a light dressing of bone dust to the soil where they are to grow. Work the goodies in the first 20 cm of soil before planting.
Love-in-a-mist (Nigella), candytuft, larkspur, calliopsis, sweet sultan, Clarkia and Shirley poppies are some of the annuals that hate to be transplanted and should be sown where they need to flower.
Tulips and daffodils should be left for as long as possible before lifting, cleaning, and then replanting or storing them. The foliage should not be removed until it has turned yellow.
Dahlias can still be planted and old tuber clumps lifted and broken up for replanting. stake when planting to avoid damaging the roots later.
The green fly is a common problem on roses. Under the right conditions, it will spread quickly until each shoot has a thriving colony of sap-sucking aphids. They can be sprayed with a soapy solution, which will not harm bees, or a commercial product.
The hardier tomatoes can be planted outdoors this month, but the plants will need shelter from the strong westerly and southerly winds. Tomatoes need rich, well-drained soil to which has been added a pinch of potash and if the soil is very acidic with a pH below 5.5 a handful of lime per m². Liquid manure applied after the first fruits are set helps ensure a good harvest.