When to plant?
Summer flowering bulbs, corms and tubers can be planted in the spring – as soon as the danger of ground frost i passed – until the end of May.
Where to plant?
Summer flowering bulbs prefer a sunny spot, whether in the garden or in containers.
How to plant?
Summer flowering bulbs can be planted in a single hole made with a trowel or in a large trench or bed.
The general rule of thumb is to plant the bulbs, corms, or tubers twice as deep as the bulb is tall. Exceptions to the rule are begonias and dahlias which should be planted just under the soil surface. Double check the package to ensure you have the correct depth.
How far apart?
For small bulbs, 4" is a good distance. For the Gladiolus, 5", the begonia 10" and the lily 12" and the Dahlia even 16". If you want a solid colour effect you can safely plant the bulbs somewhat closer together.
Before planting, you should loosen the soil thoroughly. The, level out the soil somewhat. You can plant summer flowering bulbs in any kind of soil as long as it drains properly. Adding fertilizer before the first flowering is unnecessary. If the soil is heavy clay, it would be a good idea to mix some sand or compost for drainage inth Lethe upper layer. For containers, you can use garden compost or potting soil. Sea soil makes a great potting medium.
To develop roots quickly, summer flowering bulbs need thorough watering immediately after planting. During a dry spring period, you will have to keep the soil in the garden or in the containers moist but not soggy.
Several summer flowering bulbs are suitable for use as cut flowers. Highly recommended for this purpose are Gladiolus, certain Dahlias and Lilies. To create a cutting garden, choose a sheltered spot in the garden. Plant the flower bulbs a bit closer together so that they will support one another during their growth. Once again, take flowering periods into consideration. By planting summer flowering bulbs thtat flower at different periods, you can freshly cut flowers in your home all through the summer.
Many summer flowering bulbs, corms and tubers are perfect for planting is containers and pots where they're sure to give your balcony or patio a summery touch. Good candidates are Begonias, low growing Dahlias, Gloxinia, Eucomis, Calla Lilies and Oxalis. Flower bulbs can also be planted in all kinds of containers – as long as they have good drainage. In containers bulbs can be planted more closely together that in the garden. Also make sure that the containers are droop enough so that they bulbs will not dry out. Water frequently and remove any faded flowers.
Once the flower bulbs have finished flowering, you can use them again next year. Since most of the summer flowering bulbs can be damaged by frost, it is a good idea to remove them from the soil once their foliage has died back. Once they are lifted, store them in a dry, dark, frost free location.
Lilies are the exception. They can remain in the soil and will simply emerge and flower next year.