Name: Peggy Missouri (Zone 6a) Pied Piper of Weeds
I got one bulb last year of penthouse lily not sure if that is what I got as the leaves don't look like any I have now.Tried to look up pictures but they just show the flower part.
It had a rough start but is doing much better after I moved it.
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Penthouse is an Oriental lily and the leaves of your plant look like Oriental lily leaves. It looks like it won't bloom this year but it should bloom next year. There appears to be a bit of a nutritional problem (light mottling of the leaves between the veins). You might try sprinkling a tablespoon or two of Epsom salt around it and watering it in.