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Contents the Final Word on E Eremophila Study Group Newsletter 126 January 2020 ISSN-0811-529X – print version ISSN-2208-8806 – online version Australian Native Plants Society (Australia) (ANPSA) Eremophila Study Group Newsletter No. 126 January 2020 Yellow form Eremophilas in the Ground in Switzerland ...... 16 Contents The Final Word on E. glabra Mildura Orange . 18 Contents ............................................................. 1 More on Happy Mac ......................................... 18 Letter from the Editor ........................................ 2 Website Image Gallery ..................................... 18 What’s New in the Study Group ........................ 2 ESG Field Trip – Queensland, 2020 ................ 19 New regional sub-group .................................... 2 Guerilla Gardening ........................................... 20 Feature species – E. duttonii .............................. 3 NSW Sub-Group meeting ................................ 20 First Cross-Continent Eremophila Conference .. 6 From Your Letters/Emails ................................ 21 Some Wild and not so wild South Australians 11 About the Study Group ..................................... 24 Eremophila delisseri – The Full Story ............ 14 Walpeup’s Dryland Memorial Garden ............ 16 1 | P a g e Eremophila Study Group Newsletter 126 January 2020 ISSN-0811-529X – print version ISSN-2208-8806 – online version Letter from the Editor What’s New in the Study Group Happy New Year, in the middle of a long, hot, New members fiery and very dry summer – my Eremophilas We welcome new members Jennifer Eldridge are some of the only plants that have survived in (Vic) and Maria Hitchcock (NSW). the extremely dry season we are having. Eremophilas in the News In this N/L we report final details of the Warwick/ Toowoomba/Lowood trip in July We have heard that a swag of our cultivar (only a few months away!). We only have 60 registration applications have been accepted by tickets available. In mid-March, we will let ACRA. I will include overviews of these in the other ANPS Queensland members know about next newsletter. the event, so I suggest you book earlier rather Two of the Study Group’s cultivars, Eremophila than leaving it until “the last minute”. If you find glabra x maculata ‘Mallee Lipstick’ and you can’t come, we can refund fees up until 14 Eremophila glabra ssp. carnosa ‘Fruit Salad’ days before the event starts (i.e. 16 July). We (ground cover form) have also been released have a great line-up of speakers, 5 garden visits, through Native Plant Wholesalers. and two nurseries which specialise in Eremophila. Australian Plants Journal I have also included in this Newsletter my report Work has begun on a special issue about from the First Cross-Continent Eremophila Eremophila for the Australian Plants Journal. Conference, held in Melbourne last November. Look for it later in 2020. The conference presentations revealed many Next issue opportunities for co-operation between the Study Next issue of the Newsletter will include Group, its members, and academics. This co- Eremophila oppositifolia as the feature species. I operation can contribute to our understanding of know of hybrids with E. maculata, E. scoparia Eremophila evolution and to studies of the and E. serrulata. And there are lots of colour application of Eremophila-specific chemicals in forms – send your pics!!! medicine and elsewhere. I have also been asking members for copies of One interesting discussion covered the need for photos of Eremophila before and after pruning – researchers to collaborate with Aboriginal I will do an item on pruning for the next issue, knowledge owners, under the Nagoya Protocol. using these photos. This Protocol does not affect Study Group members collecting for conservation or garden New regional sub-group propagation, but it reminds us of the need to obtain additional permits when collecting on Maria Hitchcock Aboriginal land. Calling members who live in the northern part of The second issue of interest was the impact of NSW! Would you be interested in forming a soils and locations on chemistry. Researchers Northern NSW sub-group of the Eremophila extracting chemicals from Eremophila are Study Group? finding that different soils affect the expression I anticipate meeting a few times a year in of genes that make these chemicals. We are different gardens and swapping cuttings or grateful that Study Group members were invited plants, as well as information on cultivation. If to participate in the interested, please contact Lyndal Thorburn and conference where these she will pass your details on to me. results are reported. 2 | P a g e Eremophila Study Group Newsletter 126 January 2020 ISSN-0811-529X – print version ISSN-2208-8806 – online version Feature species – E. duttonii The common name of Lyndal Thorburn Harlequin Eremophila duttonii is a rounded shrub. It was Fuchsia Bush described by von Mueller in 1858 and was reflects E. named after Francis Dutton, the Premier of duttoni’s colours South Australia. of yellow and orange. The pic below is of a wild specimen from Hans Griesser, and under that, a The photos below are of E. duttonii on the photo of Tom Jordan holding specimens of Opalton Road south of Winton (photo Hans various colours at Hesso Station. Below that, is Griesser) and at Hesso Station (photo Tom Chris Strachan’s garden plant. Jordan, taken during 2017 field trip). A yellow form is also known (see pic by Ian Rice on the front of this Newsletter). While the leaves of E. duttonii are usually glossy, plants can exude waxy terpenes onto the leaf surface – this dulls the appearance of some specimens and is more pronounced on older leaves. E. duttonii is found in all States of the mainland except in Victoria. The leaf is narrower in western It can get up to 4m, at which point its width can populations. reach 4.5m. Horticulture At left is Chris E. duttonii seems Strachan’s to be long-lived, plant in the with Chris Melbourne, Strachan growing reporting that under E. her plants are leucoxylon 30 years old. ssp. rosea. Survey respondents The trunk (top next column) is warty and this reported gives the plant character in the garden. plants 15 – 20 years old. 3 | P a g e Eremophila Study Group Newsletter 126 January 2020 ISSN-0811-529X – print version ISSN-2208-8806 – online version In cultivation, and with pruning, it forms a neat Flowering can occur year-round – the table rounded shrub (pic below, Russell Wait, of a below shows how survey respondents answered young plant). It does best in a sunny site, but it questions about when their plants flowered can tolerate part-shade. prolifically vs sparsely. Spring Summer Autumn Winter Prolific 80% 50% 0% 44% Sparse 50% 83% 75% 67% Many respondents reported that they didn’t prune their plants, as they grew evenly and quite slowly in full sun. Others do prune, choosing anything from tip pruning to removing 1/3 to ½ of the growth. Any pruning should be completed after flowering. Phil James reported that Arid Lands Botanic Gardens had a specimen 3m x 3m, and they pruned one side with a chain saw – E. duttonii seems to grow in a wide range of the sawn side produced new shoots and so the rainfall regions, with our survey respondents other side was sawn, and 12 months later it was reporting rainfall from 180mm to 1100mm p.a. back to 3m x 3m. Eighty-one percent of respondents also reported no visible effects of extremely heavy rain. Of the Pests don’t seem to be a particular problem – a remainder, 12% reported some damping off at couple of survey respondents reported problems tips or lower leaves and only 6% reported with scale, and one reported that bees attack the dieback induced by too much water. resin – the latter may be used by bees as an antimicrobial.1 Respondents grew their plants in a range of soils, which are of less importance with grafted In general, it is recommended by survey specimens. One respondent noted that they can respondents as a good bird attractor. It is a hardy handle poor soils with high pH and another plant that looks good most of the time, as long it recommends them for hedge planting. is not allowed to get leggy. It is probably at its best as a young plant and can do well in both a E. duttonii is more frost sensitive than E. tub and in the ground. linearis, to which is it closely related, but it can handle medium frosts. Survey respondents The leaves are collected for medicinal use, with reported little impact of frost – 78% reported no the diterpenes identified as active component effects of frost, and 22% reported minor tip against microbes. burn. Heavy, unexpected frosts may still cause Propagation damage – Hans Griesser reported that his plant “Straight” E. duttonii is hard to grow from grew well for many years in SA, but it was cuttings, so it is usually propagated through eventually killed by frost. Our original grafting on to Myoporum. In the survey specimen in Queanbeyan also lasted about 15 conducted for this report, 56% of respondents years before succumbing to a particularly grew only grafted plants, 19% grew plants on difficult winter. Most of respondents’ plants were protected from the wind, but one Queenslander reported that in 1 Drescher, N et al: A clue on bee glue: New insight into a severe windy area their plant grows at a 45 the sources and factors driving resin intake in honeybees degree angle! (Apis mellifera), https://journals.plos.org/plosone/article?id=10.1371/jour nal.pone.0210594 4 | P a g e Eremophila Study Group Newsletter 126 January 2020 ISSN-0811-529X – print version ISSN-2208-8806 – online version their own roots, and the remainder had both. The is frost-resistant, but the larger flowers of the E. main stock seems to be Myoporum insulare. duttonii parent, with their calyces, is definitely more spectacular. Hybrids There are a number of hybrids available with E.
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