Martha, there are many good welding supply companies that have excellent propane and air torches. It will run you $150 to $200 for a good set up. Google " propane and air torch". These torches will be properly made and safe. The weed burning torches Walmart has can literally drip flame after you turn them off. They also don’t last long. Not me but a neighbor burnt through several before he came over and borrowed my torch to clear weeds off his property. Who knew a jeweler/metalsmith would be better equipped to do landscaping work.
As you get better with soldering, you’ll end up with several torches. It will depend on the size and type of job you’re doing.