Hello - we live in Chicago and have grown herbs on our rooftop deck in planters for years. Last year our plants became infected with what we believe to be fusarium fungus

Issues by plant: Rosemary - growth stunted and white powdery residue on leaves Basil - black spots on leaves, black streaks on stalk, woody stalk Lavender turned gray and dried up - almost overnight Sage leaves started to bud and never grew to full leaves, little buds of leaves all over the stalk Mint had black spots on the leaves’ died from the bottom up What does Thyme look like when it is diseased

1. Can you Solarize soil and rocks in a large planter to kill it or do you need to remove all soil and throw it out? Can we do it in plastic, terracotta and ceramic? Planter safe then too?

2. If we are going to remove soil - What about the rocks in the bottom of the planter - can those be cleaned - if so how?

3. How do I properly get fungus off: Plastic, terracotta, ceramic planters Wood herb markers Garden Spade Garden Shears Glass Mason Jars Rocks

5. If I had uninfected plants in a different planter - can I assume those are safe even if I used a contaminated clipper to trim the herbs? (The Sage had tiny buds, small leaves in fall)

6. If this somehow comes back - can I still use the unaffected part of the herbs for cooking?

7. What should we do to prevent this in the future? Natural fungicide to put on herbs? Things we should avoid doing in the future?

8. Will herbs other than the mint family, like cilantro or parsley, or flowers cut with the same shears become infected?

9. What should we clean shears with while trimming herbs before moving on to the next plant?

10. Should we throw partial bag of soil out that used the contaminated spade to remove from bag last year?

11. Do we want to use fertilizer or is it harmful to the herbs?

I know this is a long list of questions - but we want to make sure we can eradicate the issue and have healthy herbs again this year. Thanks for your help.