"Bob H" wrote in message
news:EdsRc.228577$IQ4.61177@attbi_s02...
First season with a nice approx 3' tall Bougainvillea, full sun outside in a
17" pot.

Has developed nice blooms and looks pretty healthy, BUT ... every day now
I'm picking off half a dozen or so "yellowed" leaves, and also finding some
just laying on the ground at the base of the plant. They come right off
with no resistance.

What's the cause of this?

This yellowing indicates a micronutrient deficiency. Micronutrient problems
often occur not because the soil lacks nutrients, but because, even if they
are present, the soil's PH is too high or too low, making it more difficult
for the roots to utilize the nutrients.




I'm watering daily (or it wilts) and fertilize with Jack's Classic 20-20-20
every other week. I also have quite a bit of new branching growth and
small leaves developing, so could this just be natural old growth dying
off?

Bob
Zone 4 MN