I have a squash plant that looks different from the rest (see attached, arrow). Leaves are not a dark green, more of a yellow. The yellowish plant was planted in Miracle Grow garden soil, manure and peat moss while the other (green) plant was planted in Scott's potting soil a week after the yellow plant.

To attempt to correct the yellowish plant I've ceased watering for a week and added two tbsp of Jobes Organics granular fertilizer.

If you have a suggestion on what I should do next or what I should have done in the last few weeks I'd appreciate reading it! Thanks.

Dave

You mentioned you gave it some granular organic fertilizer. The thing about using solid forms of organic fertilizer in a smallish pot is that the nutrients in it must be broken down my soil life which is generally not quite as active in a pot that doesn't use compost as part of its medium.

If you want to stay the organic route, try giving it a shot of higher nitrogen fish based liquid fertilizer. This'll be more immediately available to the plant.

There is your cause. MG Garden Soil says on the bag Not for Use in Containers. It compacts, drains poorly, and retains too much water leading to root suffocation and root rot and yellowing of the leaves. It is intended only for use mixed well into existing garden beds.

Scott's Potting soil isn't much better but it doesn't compact as quickly. Still you will likely have problems with that plant further down the line.

Container plants do best by far in soil-less potting mixes. Check all the discussions on the Container Gardening forum about the various recommended container mixes to use and the ones to avoid.

Both plants are small enough that they could still be transplanted to containers containing beneficial mixes if you wish.

Dave

Thanks for all the help.

Dave