Usually, for us here in my growing zone
we only harvest in the spring
time and early summer...
Nothing past that...*someone told me there
is a second harvest, but stalks are only pencil
And you've posted that
I used fertilzer with NPK ratio of 20-30-20.
I personally wouldn't use that on rhubarb..
the higher middle number makes the plant
want to flower
and/or make seeds
I only use compost or a very aged manure
in the spring
around the circumference of
where the drip line would be for the plant
I know that the plant
likes a growing
of organic type to be grown in.
Does that help a little bit...
*I am still new to growing
so there maybe a few other's along the way
with additional answers for you!!!
Hey, and Welcome to The Garden Helper's Forum
by the way, we're very glad you found us!!!!