Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to kill ferns [title] Use boiling water as a cheap, natural herbicide. [step] The simplest, most budget-friendly herbicide is hot water. Pour boiling water over a plant's root system and leaves to kill it within several days without leaving a poisonous residue in the soil.

Ending1: Stir the water every 10 to 15 minutes, or whenever you see a fern further over the course of a day. [substeps] It can help to plant ferns slowly once they begin to change color. Ending2: [substeps] The beauty of this basic herbicide is that it will kill ferns for a short amount of time, leaving behind only a few peels. It doesn't have to be very long to kill ferns, depending on the climate your thrive in. Ending3: [substeps] You should need 1-2 gallons (3.8-7.6 l) of water to kill the fern, depending on its size. While you'll only need to pour the water once for most plants, you may need to repeat the process for larger or stubborn ferns. Ending4: Read the labels to determine exactly what water the plant uses. In most cases, the name is " hot water.

Answer format: ending1/ending2/ending3/ending4