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Yes, removing the smaller fruits will send more energy to the larger fruits.

If this area is well shaded, then Hostas can work, here.

If not, you may need to find something to suit the level of sunlight that will survive in that area.

This article will suggest some plants that will do well in zone 6:

https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-6/plants-for-zone-6.htm

Keep watering and continue their regular care. You can remove the brown leaves and clean up the plant. This article gives some rehydrating tips, but your container may be too large for this.

https://www.gardeningknowhow.com/special/containers/rehydrating-potted-plants.htm

I think it would be more trouble than it's worth to try to wrap and/or cover your plants for winter, then possibliy lose them. Better to grow appropriate plants for your hardiness zone. Then in summer you can supplement the landscaping with tropical annuals.

Pennsylvania's hardiness zones range from 5 to 7.

https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-5/zone-5-tropical-looking-plants.htm

https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-5/zone-5-gardening.htm

https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-6/zone-6-tropical-plants.htm

The product description says to wait six weeks before replanting. It also says you may have to reapply the product in six weeks, depending on the hardiness of the stump or weed.

If you do not anticipate having to respray and are not planting right on top of the root zone area, I would think it OK to plant after about a week.

Unfortunately, your photo did not come through. I would contact your local authorities, though, as it could be a water main leak, or even worse! Septic leaks can be much more of a problem, and each country and region may have a different way of dealing with these issues.