CULT: black walnut toxicity & iris

My two cents - my front (north facing) yard is under a 40+ yr old black
walnut with several younger ones 6-8 inches in diameter.  The yard is a
solid mass of daffodils in full bloom, so those don't mind.  It's a bit
shady for most things, but I. pallida doesn't seem to mind (doesn't
bloom much, but grows well).  Also columbines and daylilies.  But there
are definitely potential baddies in all parts of the plant.  Even the
shavings/sawdust if used for bedding can cause horses to founder.  I
blame the walnut drip for killing some rhododendrons - the only ones
that died were the ones under the drip line of the tree.

My question is, why intentionally try to grow iris in the shade of a
black walnut?  Isn't full sun supposed to be required for good bloom?

Linda Mann east Tennessee USA
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index