"Wishy13764" wrote in message
...
I bought 2 of these from home depot this past spring and summer. The first
one,
just didn't do anything, and the tops were 'ageing' ? I cut off those that
looked bad and so far its looks healthy and green, but like it hasn't
grown an
1/8 th of an inch. The second one I bought in bloom and I think this one
was
called "Sour Grapes". The blooms were blue and nice, and more buds were
appearing. But after the firs flowers faded, I was hopeing the new buds
would
open, but they never do. For both of them I give water daily, in the sun
exposure, and fertilixe once a month. Could someone tell me if I'm
treating
these plants wrong?

Way too much water and possibly too much fertilizer. Penstemons are
xeriscape plants - they are extremely drought tolerant and need water only
when they look a bit wilted. IME, this does not happen often and I live in a
summer drought location. Too much fertilizer, specially those higher in
nitrogen, can impede blooming. You're being too nice - ignore them for
awhile.

pam - gardengal