How to Fertilize grey poplar?
Slow-release tree fertilizer applied once each early spring season

grey poplar · Populus × canescens
Cultivated for their very rapid growth as specimen trees. Useful as windbreaks. Tolerant of any soil other than constantly waterlogged soils. Avoid growing within 40m of buildings as the vigorous root systems may damage drains and foundations, particularly on clay soils; has the potential to become a nuisance
Slow-release tree fertilizer applied once each early spring season