Why tulip bulbs become smaller?
I can share several reasons why tulip bulbs might become smaller:
1) tulip bulbs havn’t been dug out for long – more and more bulbs are growing but there is not enough nutrients for all of them, so they become smaller and smaller;
2) wrong care – they were not dry enough, bad storage, they were dug out too early or too late;
3) you grow tulips on the same place for many years – pests and diseases begin to damage plants.
Soil for tulips should be replaced each year. The weather can also affect how the tulip bulbs grow. Soil should be moist in the fall with adequate moisture so the bulbs will develop good roots. If the soil is too dry it will also effect the tulips and bulbs growth.