Knowledgebase
Why have my bulbs failed to flower this year?
Posted by Dobies Staff on 23 December 2014 02:07 PM

A common problem that can occur with bulbs in the garden is the production of healthy foliage but they fail to flower.

This can be due to a large infestation of bulb fly or in the case of Narcissus it could be basal rot. It is however more often due to cultural conditions. Dry soil conditions or a lack of nutrients can result in a decline in bulb size, which is too small to flower. Very crowded clumps of bulbs that are competing for moisture and nutrients, naturalized bulbs that have not been fed and bulbs growing in dry soils can also be affected.

Large clumps of bulbs should be divided and replanted in an area that has had a general fertilizer added and kept well watered in dry weather, during the growing season. Established clumps should be given a general fertilizer in spring and a foliar liquid feed when they are in leaf. The plants should have the dead flower heads removed.

At the end of the flowering season allow the foliage to die back naturally, do not be too quick to remove the foliage, allow at least six weeks so that nutrients can be fed back into the bulb.

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