If you want elm to take root quickly, you can use rooting powder to treat its bottom. The specific method is to prepare some rooting powder and mix it with water to make a solution of 50-200mg /kg. Then place the bottom of the prepared branch or stump in it and soak for 20-30 minutes. Take out and dry before planting.
Whether the flower soil is suitable for planting will also affect the rooting speed to a great extent. When planting it, it's best to use the flower soil which is soft, loose and full of nutrients. It's good for it to take root. Generally speaking, the rotten leaf soil and river sand can be prepared into the flower soil for planting according to the ratio of 2:1.
After planting, it needs to be placed in an environment above 20 ℃ and provide a small amount of soft sunlight. When the flower soil becomes dry, it needs to be replenished with water in time, but it does not need fertilization. In this way, it can obviously speed up its rooting speed and let it grow new roots within 10-15 days. If the late management is not very good, then it may take 20 - 25 days to take root.
