Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to protect roses in the winter [title] Reduce water and fertilizer 6 weeks before the first frost. [step] This is a popular technique among rose gardeners, known as " hardening off. " reduce the water by half and stop fertilizing altogether to help prepare your roses for the cold weather.

Ending1: [title] Have a hygrometer and concrete bulb in place for autumn, and apply it anytime you plant. [step] Most garages will have a stone body pool with a ridge so you can place the bulbs through the drain. Ending2: [substeps] Use a fertilizer that does not contain nitrogen (such as sodium hydroxide) and/or fertilizers that are high in nitrogen. Nitrogen kills the growing microbes, leaving them older. Ending3: [title] Put plant materials in cuttings in plant trays. [step] Cut a " slit " of two or three pieces of metal mesh (like plastic or material) and place these in cuttings. Ending4: The reduction will help thicken their plant cell walls, giving them a purplish cast. [substeps] You can look up your first and last frost dates by entering your zipcode at https: // davesgarden.com/guides/freeze-frost-dates/b.

Answer format: ending1/ending2/ending3/ending4