Poplar is a light-loving plant, which needs temperate climate for its growth and has certain cold tolerance. The requirement for water is also very strict, because its photosynthesis and transpiration are higher than those of other broad-leaved trees. Poplar seeds are small, and the capsules will crack when they mature, so the seeds are collected from cutting ears or ground. Seeds are easy to lose germination ability, so they should be sown with the harvest. Sow seedlings on sandy loam rich in humus. Poplar seedlings are mostly asexual propagation. Trees that are easy to take root, such as Populus deltoides, Populus simonii and Populus euramericana, are used for cutting seedling. Trees with difficulty in rooting, such as Populus tomentosa, are treated with growth regulators before cutting, or poplar branches with difficulty in rooting are grafted to poplar trees with easy rooting, and then cuttings are used to raise seedlings. If it is a poplar with strong germination ability, it can be ditched near the big tree, and its lateral roots need to be cut off, or the roots should be cut off on the seedbed to promote the occurrence of root tillering seedlings.

If you want to plant trees, you must have deep loam or sandy loam, and sandy loam or moist cinnamon soil is better in North China Plain. If the groundwater level is too high, it is necessary to ditch and drain. The improvement methods of poplar varieties include selection breeding, cross breeding, polyploid breeding, mutation breeding and so on. Poplar diseases are not only various, but also serious. Common diseases are leaf spot, leaf spot, rot, canker, nodule and purple root rot. The pests that do great harm to poplar mainly include whitefly, dead leaf moth, ship moth, scale insect and so on.