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Welcome to the Bunnings Workshop community @stixwoman. It's wonderful to have you join us, and many thanks for your question about dissapearing bulbs.
There are several possible reasons why your bulbs have disappeared such as rodents might have dug up and eaten the bulbs, which is a common issue in many gardens.
Bulbs can also rot if the soil is too wet or poorly drained, or they may fall victim to fungal or bacterial diseases, causing them to deteriorate. Vigorous competition from other plants or weeds might be outcompeting your bulbs for nutrients and space.
Additionally, extreme weather conditions, such as a very harsh winter or an unusually hot and dry summer, can cause bulbs to die off. Over time, bulbs can become exhausted and may not produce flowers or even survive, necessitating regular replenishment for certain types.
Since your freesias are thriving, the problem seems specific to irises and liliums. Inspecting soil conditions and checking for pests or diseases, as well as replanting bulbs in a different location and ensuring proper care, may help prevent this issue in the future.
Here's a helpful guide: How to plant spring flowering bulbs.
Please let me know if you have any questions.
Mitchell
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