Giant Lilies

[trixie_dar]

Can anyone tell me why the giant lilies I planted get smaller every year?

What type of feeding should I be giving them?

Thanks to all who answer

[Buenchico]

From the Royal Horticultural Society:
"Mulch and feed regularly"
http://apps.rhs.org.uk/plantselector/plant?plantid=324

From a Danish botanist:
"Cardiocrinum is a nutrient demanding plant and adding natural manure or ordinary lawn fertilizer in the spring will pay off. "
http://www.viscum.dk/eng-sider/cardiocrinum.htm

I'm no gardener but reading that lot suggests to me that you need some good old-fashioned horse manure! The good news is that it's cheap; 50p per sack up the road from me ;-)