According to Zhang Zhixiang, a professor at Beijing Forestry University, the widespread planting of Cupressaceae trees, especially Chinese juniper, is the main source of tree pollen in Beijing ...

Native plant species are at home in local climates and soils, do not interfere with local ecosystems and need less water than ...

Annuals live for only one year. Biennials live for only two. Technically, all other plants are perennials. Horticulturally, this classification is much more specific. Tony Tomeo can be contacted ...

Spring bulbs are now blooming, and some are already done. Summer bulbs will bloom a bit later, and some will continue until autumn. Annuals, perennials, shrubbery, vines and all sorts of other ...

The Appendices of the Convention provide the lists of wild species that are protected by the Convention. In the introductory text here we should add : Appendix I includes wild flora species and ...

The Flora of Australia Online database (derived from the hardcopy volumes) is no longer being updated (last entries c. 2014). PDFs are also available for some volumes, with the intention that all ...