[Arid_gardener] lily of the nile

[Phil Jorgenson]

I purchased and planted 2 large lily of the nile plants about a month  
ago.  They are planted in a large planter box with a western exposure  
that gets filtered sun until about 2:00 pm then full sun until  
sundown.  They are beginning to bloom and appear healthy except for  
the 3 or 4 leaves a week that turn brown and I remove.  The brown  
leaves are always on the outside perimeter.  These brown leaves are  
not particularly dry and the remaining leaves look okay.  Could I be  
over watering?  I've read that they don't like "wet feet" .  I'm  
watering the perimeter of the planting box  about every other day as  
I've recently planted sweet potato vine planted there.  I'm deep  
watering the soil around the lily of the nile about every five days.   
Originally the soil in the planter was hard and contained a lot of  
clay.  Before I planted the new plants I incorporated several large  
bags of potting soil.

I've been reading everything I can on line about these plants but  
I've found nothing the describes what's going on with mine.  Do you  
have any suggestions for me.

Mary
Scottsdale Arizona