Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to keep your plant nursery clean [title] Give your nursery a thorough cleaning before winter. [step] Keeping the nursery or greenhouse clean works well as a defense against plant diseases and insect infestations. Begin with a thorough cleaning of the entire nursery in the fall.

Ending1: In addition to the plant nursery, try also walking through your entire flower garden once a week. This will remove especially powdery material that could get into circulation, and will reduce the appearance of grey or powdery mold. Ending2: Clean it all out, then put it back in order before winter rolls up. [substeps] Remove the shelves, carpet, and other materials from the areas where the plants could be moved. Ending3: If the nursery are not ahead of schedule and using chlorinated water, clean the interior and exterior of all areas with disinfectant. Then discard any plants after removing them; otherwise, bacteria may grow. Ending4: The growing season is over at that time, the weather is beginning to cool and insects are looking for a warm home for the winter. [substeps] Disease organisms also survive the winter in greenhouses, only to attack with a vengeance when the temperatures warm back up.

Answer format: ending1/ending2/ending3/ending4