Once the rarest cultivars have been established in the Threatened Plants Project (TPP) it's time to see if we can find them in National Plant Collections or in notable gardens. If you might like to help by asking for threatened plant cultivars over the internet in collections such as Kew Gardens, the Edinburgh Botanics and Hilliers, please do get in touch
Instructions for collections checking (PDF) 12kb
Instructions for collections checking (MS Word) 11kb
44 genera with threatened cultivars, which need collections checking:
Macleaya, Metrosideros, Ocimum, Oenanthe, Olea, Onoclea, Oplismenus, Ornithogalum, Orostachys, Oryzopsis, Osmanthus, Osteospermum, Ourisia, Oxalis, Oxydendrum, Ozothamnus, Panicum, Pennantia, Philodendron, Phragmites, Pieris, Plectranthus, Prunella, Pseudopanax, Punica, Puschkinia, Pyracantha, × Phylliopsis, Rhus, Ricinus, Rodgersia, Romulea, Ruellia, Russelia, Ruta, Santolina, Schoenoxiphium, Sidalcea, Soldanella, Thunbergia, Urtica, Veronica, Veronicastrum, Watsonia, Yucca, Zephyranthes
Billadiera,Ipomoea,Kerria, Knautia, Kunzea, Lophomyrtus, Luma, Melaleuca, Myrtus, Ozothamnus, Sollya and Xerochrysum are already being done by volunteers.
Last updated 28/03/2012