give the importance of botanical gardens.

• Horticulture and cultivation skills allow us to grow plants that might be lost in nature, which means that species diversity can be conserved in the gardens, but also allows us to consider restoration and rehabilitation of degraded habitats.

• Living collections of plants collect species under various groupings, to maintain a living store of genetic diversity that can support many activities in conservation and research.

• Seed banks and collections of living plants allow species to be safeguarded. Plants must be carefully collected stored to ensure maximum genetic diversity is retained, and much research is required to determine the best way of storing each species. This is the conservation of plant diversity in situ, and botanic gardens are key to this strategy's capacity and success.

• Research and development into plant taxonomy and genetics, phytochemistry, useful properties, informing selection of plants that can withstand degraded and changing environments (especially important in face of the threats posed by climate change).

• Education is a strength of botanic gardens that allows them to communicate the importance of conserving plants, reaching out to diverse audiences, and also to communicate how this may be achieved.

• Linking plants with the well-being of people, and also helping conserve indigenous and local knowledge, to encourage the sustainable use of plant resources for the benefit of all, as part of sustainable development.

There is a wide variety in the size and types of botanic garden, in all regions of the world, working together in networks to share information and expertise.
Hope it helps... :)