One plant started having a weird tie-dye effect on its leaves. The other plant is still doing really well and since they are facing similar conditions (same soil, same transplant date, same sun etc) I'm unsure what the other plant needs. I wish plants could tell me what they wanted!! It would make life so much easier!!

At first I wondered if it was sun scorch/not enough water but thought I'd reach out to my fellow gardeners. What say you?

Are the wood pieces mulch, or part of the growing medium?

Garden Mix Soil
This soil blend is ideal for a new garden. Lots of organic materials and nutrients makes it great for vegetable and flower gardens. This soil has a compost base and is blended with some sand. No green waste is used - less weeds & less problems!

Organic Garden Mix
Premium organic top soil containing fish meal, ultra-kelp, worm castings, alfalfa, composted fine bark, mushroom manure, and sourced low silt sand. Great for edible gardens and rejuvenating poor soils.

I bought half cubic yard of each and mixed the two for my garden this year. The wood is part of the medium as I did not add any mulch myself.

And yes, the tomatoes are in a container - 1 plant in each. I attached a picture of the planter. It is partially full of plastic bottles at the bottom (lined with landscape fabric) as I did not want to fill the entire planter with soil. I read Tiny Tims were good candidates for containers.

I transplanted them outside around the 2nd-3rd week of May.

They are situated on a south facing deck and gets sun for majority of the day.