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Posted 9M ago by @Slamarooski5009

Adams elderberry

This is an Adams elderberry plant. Ever since I put it into a bigger pot to grow, it's been dying and getting black spots on the leaves. The other one died already as the leaves got dark patches, turned yellow and fell off. I sprinkled cinnamon in the soil, but I'm not sure what else to do!
17” pot with drainage
Last watered 8 months ago
Best Answer
Elderberry plant makes a terrible houseplant. They will only do well when the are small.

They need a lot of direct sun and a grow light will never be enough.

If you can transition her outdoors but first you need to address the suspected root rot.

Root rot is your likely cause of the black leaves. The reason I'm 99% sure is that she's indoors and not getting enough light. In those conditions she can't grow very well or fast like she would outdoors.

When you moved them to bigger pots she was taking even longer to dry out. Her soil stayed wet too long and then bacteria started to grow and multiply in the soil. It then started to feed on your plants roots.

I will give you the treatment below. But first I need to let you know that should really consider moving her outdoors to a sunny spot. She will need to be acclimated since she's been indoors. You can start after the root rot treatment.

Acclimation

Day 1&2 2 hours outdoors, shade

Day 3&4 4 hours outdoors, shade

Etc.

Then do the same acclimation to sun after she has accomplished full days in shade.

Root Rot

1. Remove from your pot, to check the roots. If there is anything brown black or mushy you have rot and will need to cut it all off. Keep only the healthy roots they will be whitish in color

Now root rot comes from a bacteria that forms in your soil and then attacks your plant. So treatment is absolutely necessary.

2. Cut off all affected roots soak what is left in:

1 part peroxide + 3 parts water and leave in the peroxide mix to soak for 5 minutes this will kill off the remaining bacteria. It will bubble pot and fizz this is good it’s killing the bacteria.


3. Next is soil, the best
choice is to throw it away. It’s safest. Or bake it for 1 hour in a 200
Degree oven, not the greatest because it REALLY stinks. But it’s effective. Or the most risky way is to thoroughly flush your soil out with your peroxide mix twice! You need to be very careful and do it thoroughly because if even a teeny bit of bacteria is left your rot will come back.

4. Now the pot, it also has that pesky bacteria you must scrub it out with soapy water very well and then also scrub it down with the peroxide mix.

Now you can plant her again. Be sure to add some perlite to your soil for aeration. This will help oxygen reach those roots and I avoid bacteria growth in the future.