If you buy more than 20 are there fixing on them?
Yes you can buy more than 20 grow bags. Just submit a request on our contact form with the details and we can give you custom order pricing: https://www.bootstrapfarmer.com/pages/contact-us
How do these bags hold up against gophers? Will they chew through the bottom?
Good question which im afraid I don't have a definitive answer. It takes a lot of effort to rip the fabric. I imagine a gopher would need to put some effort into it but it could get through.
These are made out of a leach free food safe polypropylene fabric woven plastic. A gopher could probably chew through but it would not enjoy doing so. We have never heard of anyone mention that they had a gopher chew through yet. If this was something you were really concerned about you could line the bottom with hardware cloth which is a steel mesh available at any hardware store.
I know the soil will stay a bit cooler in summer time in grow bags compared to solid plastic containers. However, if I plant a dwarf fruit tree like a peach or apple in one of these grow bags and leave it outside in winter (zone 5 ), will the plant survive harsh winters? Will the grow bag with soil inside will provide enough protection to the roots as if the tree is planted in the soil out in the garden? Please explain. Thanks very much.
The 100 gallon grow bags are wide (about 4’ across) but not very deep (about 12 inches). Other than the bulk of soil surrounding the root ball, the grow bag itself will not offer any insulation properties through a winter. A deeper grow bag like a 25 gallon for fruit trees might be a better winter home ….BUT again the actual fabric of the bags (felt) does not offer much in terms of insulation properties.
Would the 100 gallon work for potatoes or sweet potatoes?
The 100 gallon would work but our 200 gallon grow bags https://www.bootstrapfarmer.com/products/200-gallon-grow-bag might be a bit better suited because of the extra hieght that it has.
What is best to fill with for strawberry plants and tomato plants
Tomatoes can be done with anywhere from 3-7 gallon bags. Strawberries I would recommend either a 5-7 gallon, or the lower profile 100 gallon.
How much soil or compost does the bag require?
It will take a little over 13 cubic feet to fill the 100 gallon grow bag up.