Native Plants for Pots and Containers 27-06-20
On 27th June we had our first group meeting via Zoom. Our guest speaker was Brian Roach, from Westleigh Native Plants. With decreasing size of house blocks and increasing numbers of people living in units and retirement villages, this topic is very relevant. It is also possible to grow some of the difficult-to-grow species in a pot because you can control the growing environment more easily than for plants in the ground. There is the chance to grow some of the desirable Western Australian species. Having plants in pots means that you can move them around, to take advantage of sun and light, or move them out of the strongest sun in summer. You can also move that beautiful plant in full flower to a spot where you can see it better and show it off to visitors. Maybe a difficult plant can be left where you can check on it easily and control the watering more closely. There are other containers you can use instead of pots, eg lengths of old clay piping left over from a plumbing job. These can be partly buried to stabilise them.
Brian had some practical advice about pots. He especially warned us to avoid the urn-shaped pots which curve in at the top. The curve makes it almost impossible to tip the plant out in order to repot it when it outgrows its pot. He advocated purchasing a native pot mix then adding perlite and cocopeat. Some plants have larger root systems and eventually outgrow any pot. They need to be pensioned off or planted in the garden if appropriate. In general the smaller growing plants are the most suitable.
During the talk Brian showed great photos of the plants he has grown in pots. These included Pimelea linifolia, both Crowea exalata and saligna, some boronias and Lechanaultia biloba with its brilliant blue flowers. The latter demonstrates that pot culture can be successful for this prized Western Australian plant, which regularly dies in the ground in Sydney. Other species he featured were Darwinia taxifolia ssp macrolaena, the native Rhododendron viriosum (formally R. lochiae), Billardia leumanniana and Conostylis aurea. The last two species are also examples of floriferous Western Australian plants. Brian has registered some new names with the Australian Cultivar Authority for different and desirable variants of some species. One example is Homoranthus prolixus ‘Golditops’ which has masses of brilliant gold flowers. This form was found in northern NSW. More recently he has named a natural hybrid between Grevillea fililoba and hirtella found by Peter Olde in Western Australia. He called this small plant Grevillea ‘Butterfly Beauty” because the flowers look like crimson butterflies in the bush.
As usual Brian was an interesting and very knowledgeable speaker, much appreciated by those who logged in via Zoom.