I have MS and also have serious loss of upper body strength and use a scooter. 1. There are all kinds of gardening tools with medium length handles - 2-3 feet long. Also you can saw off regular tools. 2. Check weight of tools - for instance one rake we have is much heavier that what appears to be the same tool with a different handle. Lighter is better. 3. Use the hoes that look like a hoop on the end instead of a regular one - MUCH easier to use and more effective. You can "drag" them effectively instead of "hacking" like with a regular hoe. 4. Get a battery powered weedwacker - starts with a push button instead of pulling. Electric ones do the same, but cords are awkward. The battery powered one is sort of heavy, but I do a little at a time and not pulling the start cord makes it easier. 5. Check out a mantis tiller. They are about 20 lbs, but best of all they go forward and till by pulling back - easier to use from a chair. They work like crazy! 6. Don't know if you could use it with a wheelchair, but it works with an electric scooter: A Rubbermaid garden cart - made out of rubber/plastic. Incredibly light weight ( a small child can move it easily when its empty) and we made a little hitch so it will attach to the scooter. I pull it to where I want and if I am doing heavy duty weeding, I fill it. If it is too heavy, I just disconnect it and let my husband dump it with the tractor. 7. Get plastic electric ties. They will let you attach stuff to the wheelchair and just cut them when you want to remove things. For instance, a bucket can be attached. When you are through, cut it loose. They are cheap - tossin them after you cut them off is not a major cash outlay. 8. For in the house - might work in your garden, too - You can buy commerical Rubbermaid trash cans in several sizes: Pricey, but worth it. They have heavy duty casters and you can get a plastic/cloth tool caddy which hangs from the handles. I keep one in the house with all cleaning supplies in it and a heavy duty trash bag. When cleaning, I drag the whole thing room to room. Can empty trash cans, and do almost all cleaning chores without returning to cabinets, etc. The same thing could be used in the garden - weeds/dirt/etc. in the can and all your tools in the caddy. Top is heavy enough to use as a potting table. The small/medium size is about the right height for a wheelchair. The big one is good for scooter users. The cans are grey and the heavy casters are removable - if you get one, spend the bucks (like $40/$50) and get the real thing. Ones meant for household use are too lightweight.

A thread worth bumping. I've been through a few different garden scoop / trowels. Some are heavy, some are flimsy and most handle very little soil, at least for me. My fav is an old, I guess antique or at least vintage, flour/sugar/feed store scoop. So comfortable. Moves a lot of soil. This one is made of sheet metal formed and welded so the handle is hollow. Very light, very strong. Never seems to rust, don't know why. It is galvanized but at least some spots the zinc must be gone. The metal is thin enough that it's easier to plow thru soil than thicker trowels. But this is strong, no flex at all. Due to the shape I think, every surface is curved. I scoop soil, rocks, you name it. The inside of the scoop is smooth, no bolt heads or even weld marks so no place for soil to stick and accumulate. The shape of the scoop keeps the soil from spilling out until you want to dump it. And to boot these are surprisingly cheap imo. I think I paid $5-10 for this a few years ago at Zinnias at Melrose. But I see them on Ebay a lot in the $5-20 range. So about the same price as a crappy trowel.

Two plastic buckets containing duplicate set of general diggers, pruners, misc. tools etc - one lives in the garage for instant access to the front yard, the other in the back yard storage box for instant access in the backyard. I'm a lazy gardener and need tools nearby or I'll find an excuse not to do what needs to be done! Waterproof (but not mouseproof as I found out the hard way) plastic storage box/bench located in the side 'work' yard. Great for containing clutter and a good work surface for re-potting plants and brushing the pup! A 'pop-up' Fiskar trash barrel (lots of copycats available now) - it is lightweight to move around when pruning, trimming, weeding and stores compactly when not in use. I line it w/a large trash bag and secure the top overhang edges w/spring clothespins so the bag doesn't get pushed down in. Garden Claw - makes short work of loosening soil to plant in and efficiently breaks away wide roots when digging up to transplant. Bulb planter - works great when setting out dozens of annual seedlings. Nitril gloves - the best I've ever encountered. The bench type kneeler cited earlier in this thread - very versatile - and a large foam kneeler/pad which was marketed in Bed, Bath & Beyond and both a garden kneeler and a child's flotation pool toy! Putting conventional things to use in unconventional ways (like the plastic toboggan also cited above) really works!

I bought a sturdy plastic stool thats about 6 or 7" high that I sit on when I'm weeding in the garden or potting up plants. It's the perfect width and height and works great since I can't stay on my knees or stand in one place too long without my knees locking up. I have loose knee caps due to being born with my legs twisted outwards until it looked like my feet were backwards (had to where leg braces when I slept as a baby in order to fix them). My other favorite tool is my parents digging pitch. It was given to them by some family friends and is one of the really good quality ones. It takes a lot of force to bend one of it's tines unlike the ones they sell in the chain stores. I'm constantly borrowing the thing since it's great for loosening up the soil around a weed's roots without damaging tree roots or any nearby good plants.