Spring-flowering bulbs must be planted in the autumn because they require a sustained "dormant" period of cold temperatures to stimulate root development. Plant the bulbs and tubers before 1st of November. Then they have enough time for making roots. This way they better can resist the cold of winter. It's best to plant bulbs as soon as possible after bringing them home. If you must store them, keep them dry and cool - between 10 and 15 degrees (°C).
Flower bulbs can be used in many different ways depending on the ultimate objective, here are some professional planting tips:
Our assortment can be devided into 2 groups:
For perennialised flowering, spring-flowering bulbs are allowed to remain undisturbed in the ground after they have finished flowering. This gives their foliage the time to wither back and provide the bulbs with nutrients to prepare them for the next growing season. Spring-flowering bulbs used this way are actually following the same cycle as perennial plants. Usually, sp ring-flowering bulbs planted for this purpose are included in an existing border consisting of perennials, shrubs or roses. In this situation, it is essential to coordinate not only the colours of the flower bulbs among themselves but also the colours of the flower bulbs with the surrounding perennial plants.
For naturalised plantings: bulbs suitable for naturalising have just a little more to offer than the ones for multiple-year flowering. Like them, bulbs for naturalising also remain undisturbed after flowering and will come back again every year, but their added benefit is that their numbers will continue to increase as long as they have been planted under ideal conditions (light and air). Naturalised bulbs can function as independent plantings – snowdrops and crocuses in lawns and grass-covered verges – but they can also be included in existing plantings such as in planting beds with groundcover plants beneath trees and shrubs.
Most spring-flowering Dutch bulbs will thrive in either full or partial sun, but do just fine in almost any location that offers good drainage. Bulbs will rot in standing water so avoid areas prone to flooding, such as the bottom of hills or under drainpipes.
After choosing the site:
1.Dig either a trench for a bed planting, or individual holes for individual bulbs or small cluster of bulbs. To determine how deep to plant , consider the width of the bulb. The rule is: the planting depth is equal to 2 times the width of the bulb. (example: a bulb of 2cm wide gets a layer of soil of 4cm high above them)
2.Loosen the soil with a rake to aerate it and remove any weeds and small stones. Mix in a bit of peat moss to improve soil drainage. Place - do not push - bulbs firmly in the soil with the pointed side up. Space large bulbs 7-20 cm apart and small bulbs 3-7 cm apart. (If you're not sure which end is right side up, don't worry. Upside-down bulbs usually come up anyway!)
3.Cover the bulbs with soil and water generously, if the soil is not wet yet. Add 5-7 cm of mulch, pine bark is fine, on top of the garden bed. This will provide added protection from the cold and keeps the soil from drying out.