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I bought several Isabella lillies 2 years ago and planted them in pots in the compost suggested. The first year they were a little taller than the 100cm mentioned. I left them in the pots and last year they grew to about 130-150cm and the flowers weren’t as impressive. Please can you advise what I can do to get the best show this year. Thank you.
Wow, they sound very tall. Lilies can get taller over the years once they become more mature. I would advise giving the soil a freshen up each year and try using a good multipurpose compost like John Innes No 3 which is recommended for most lilies. You can also try using a Tomato Feed on your lilies to stimulate and strengthen them. Start using it when you see signs of growth. Make up your tomato feed with half the recommended dilution (written on the instructions on the bottle) and feed once every 3 weeks.
Do also check for lily beetle as not only will they make the foliage look unsightly, they can also have an affect on the following year’s growth.
The Lily Beetle Prevention Spray will help keep the beetles at bay and strengthen your lilies.
I hope this helps.
The Hart Family