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Agastache still dying - any ideas?
Pete.8
Posts: 11,340
I did post on this last week but couldn't upload photos.
More of my agastahce in one part of the garden are giving up and dying
Is it a viral / fungal problem or what else?
Help!
5 plants in a row all with the same symptoms, others around it look fine, but will likely deteriorate in the next few days -
another clump planted about 8ft away in the same border all looking fine- 
Any ideas?
Billericay - Essex
Knowledge is knowing that a tomato is a fruit.
Wisdom is not putting it in a fruit salad.
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Could the problem possibly be excessive humidity/moisture ? I'm reasonably sure they originate from Asia & N.America ; probably drier climes with good air circulation .
If hot & dry I water mine once a week & they seem to enjoy that but Paul is right with excess moisture. What soil type are you gardening on? Did you add grit to the planting hole etc?
Scrap my comment - the pictures hadn't loaded
If it is Pythium root-rot , this is usually caused by excessive moisture in the ground .
Thank you all for your helpful replies.
I think Jackie has cracked it. I just pulled another up - there are no fresh roots, but when I pull a root, the sheath comes away leaving the thin dead brown inner bit, so looks like Pythium. Thanks Jackie
I'll do some proper research, but I guess the plants are doomed.
I see there's a product call Pythoff, but I don't want to take that route really.
I've grown a patch of agastache there for several years - natures way of telling me it's time for a change. I've got 4 lupins in pots and some rootbound aster little carlow looking for a home...
I'll pull the agastache dig in a bag or 2 of h/grit and see how it goes
Thanks again
Billericay - Essex
Knowledge is knowing that a tomato is a fruit.
Wisdom is not putting it in a fruit salad.