After retrieving the hose out of winter storage, you may discover that your hose ends are seemingly welded together. Dirt and grime can work their way into hose couplings, making it difficult to separate the hose ends. Any bend or dent in the fittings will make the process harder to do, as well. You don't have to throw out two perfectly good hoses just because they are stuck after a long winter. Try a few small tricks and you can be quickly watering your thirsty seeds.
Use two pipe wrenches to grasp the ends of the hose at the couplings. Pipe wrenches are designed to securely grasp metal pipe, so they are ideal for this problem. Tighten the nut enough so that the wrench holds the end securely, but not enough to bend the outer ring. Rotate the wrenches in the opposite direction, with the outer ring turning toward the left and the inner hose toward the right.
Heat water to boiling and pour it over the outer ring on the stuck hoses. The hot water should expand the metal of the outer ring enough to loosen the hose ends. Grasp the newly expanded hose ends with pipe wrenches and loosen gently.
Shoot a spray lubricant, such as WD-40, into the opening between the inner and outer hose ends. The lubricant comes will a thin straw-like adapter to the spray nozzle. Use this adapter to aim the substance into the space. Allow the lubricant to sit for 10 minutes, then loosen with wrenches. Apply added layers of lubricant if the first application doesn't succeed.