All the outer leaves have been eaten, and carpet was added round the stem to no avail. It's a new raised bed.
The following articles should be of some help to you:
https://www.gardeningknowhow.com/plant-problems/pests/facts-about-slugs-and-how-to-kill-garden-slugs.htm
https://www.gardeningknowhow.com/plant-problems/pests/organic-snail-control-how-to-control-garden-snails.htm
I am building an above ground gardening bed for vegetables and herbs. What is the best material for the bottom? Do I need to line the inside with plastic or anything?
This article will help: https://www.gardeningknowhow.com/edible/vegetables/vgen/raised-vegetable-gardens.htm
Wondering if you could send me a design on how to build a raised box to grow veggies, out of sleepers about 2 meters long by 1 meter wide.
These articles will help: https://www.gardeningknowhow.com/edible/vegetables/vgen/raised-vegetable-gardens.htm
https://www.gardeningknowhow.com/special/urban/raised-beds-for-urban-settings-no-digging-required.htm
I am starting three 3 by 6 raised gardens. Do tomatoes, cucumbers, beans, peas, lettuce, and beets sound like too much in those size of beds?
Nope, sounds good. If you have not read it, you may find this guide helpful:
https://www.gardeningknowhow.com/edible/vegetables/vgen/starting-vegetable-gardens-guide.htm
Can I turn my son's old 6 x 6 sandbox into a vegetable garden? The sand is low. Can I just add some topsoil or black dirt to it and combine them? What is my best bet?
Yes, these articles will help:
https://www.gardeningknowhow.com/special/organic/compost-for-organic-gardens.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/what-is-soil-made-of-creating-a-good-garden-planting-soil-type.htm
https://www.gardeningknowhow.com/special/urban/raised-beds-for-urban-settings-no-digging-required.htm
I'm doing a raised bed veggie garden and want to know what kind of mulch is the best. Is there any that won't attract pests?
Here is an article that you may find helpful: https://www.gardeningknowhow.com/garden-how-to/info/whats-the-best-mulch-for-my-garden.htm
I am putting a raised garden in my backyard and have sprayed the grass to kill it, but am wondering if I need to dig up the grass or can I just put black weed cloth over it and then add the dirt.
Yes, these articles can help: https://www.gardeningknowhow.com/special/urban/raised-beds-for-urban-settings-no-digging-required.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/lasagna-gardening.htm