Last spring (I'm in the Southern Hemisphere), I had some Bothrytis (sp?) on my Liliums, only asiatic hybrids and species lilies were affected, mainly the ones with yellow flowers. I understand this happened because of the unusually persistent dew we had every morning.
I carefully removed all affected leaves and disposed of them in sealed plastic bags in the garbage. I also applied some Captan powder to each pot (my lilies are all potted) before watering.
Now it is time to remove the stems. Some are totally dry, other just wilted. The dry ones can be burned, but I'm afraid the other ones (most of my Lilium stems) will have to be put in sealed plastic bags and disposed in the garbage bin.
Questions:
1. Have I proceeded right so far?
2. should I proceed as described with the stems?
3. how often should a apply Captan on my lilly-pots and dry powder or diluted?
4. some Liliums will be replanted in new pots. Should I prepare the soil beforehand?
5. is there a better method to control Bothrytis?
Any advice will be appreciated.
