Viewing post #2547198 by sooby

admmad said:@sooby

By "better" might you mean clear, or more vibrant or more intense? Might the flower colours have been different - more purplish, more reddish, deeper yellow, etc. Were there effects on cyanic colours (reds & purples) and on carotenoid colours (yellows, creams, etc.)?
Any specific cultivar names?

This is going back a long time but my recollection is that it was a clearer pink and the red eye was redder on the only cultivar I remember, 'Siloam Cinderella'. I no longer have it so can't re-do more scientifically. Lowering the pH did fix the interveinal chlorosis on the daylilies suffering from it (which turned out on analysis to be manganese deficiency caused by the pH).