The Q&A Archives: sapphire salvia suddenly dying

Question: I have now lost 4 salvia plants the same way in different parts of my
full sun garden. I have red salvia that is taking over the garden and
a pink and lip stick salvia that are doing fine but the blue ones do
great for a while and then the leaves turn black. I love this salvia
and the one at the nursery where I shop is huge but I seem to have no
luck with the blue one. I'm watering because our temps have been very
hot and with the heat index nearing 105-110. I water very deeply on a
regular basis. We have problems with voles and I have planted these
plants in the middle of my daylily bed since the voles don't bother
the daylilies. My other plants in the bed seem to be doing fine.
roses, daylilies, 4 o'clocks, cone flower, mexican petunia, torch
lily, black eyed-susans, lily of the nile, agapanthas (sp).

Thank you for any tips you can give me.

Answer: Salvia should do well in your area and as a group, salvias tend to be mostly pest and disease free. They do need a well drained soil that is not overly rich, so it might be possible that they are somehow being overwatered and thus suffer root damage. Since your others are doing well I suspect it may be something unique to the specific variety you are growing -- there are many different salvias. I would suggest you consult with your local county extension to try to diagnose the problem and based on knowing that, decide how to proceed. I'm sorry I can't be more specific for you.

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