As any gardener knows many garden plants are prone to disease. Gardens can be a great place to find pathogens, both on cultivated plants and weeds. For pathogens on weeds look at the page on urban pathogens.
Common on the host in parks and gardens. Look for withered leaf tips on which are found tiny white conidia in tufts.
Very common on the host in gardens. Brown telia and uredinia are formed on the underside of the leaf, with red discolouration around them. It also sometimes forms orange aecia.
Extremely common on the host in gardens. Look for thin white patches on the leaves, sometimes distorting them slightly.
Extremely common on the host in gardens. Look for felty white patches on the leaves, sometimes distorting and yellowing them slightly.
There are several different leaf spot fungi on Hebe. They are difficult to distinguish. Microscopy is essential as you need to look at the size and colour of the conidia. I have only included the two most common species here.
For a full assessment of different leaf spots on Hebe see Wu, W., Sutton, B. C., & Gange, A. C. (1996). Revision of Septoria species on Hebe and Veronica and description of Kirramyces hebes sp. Nov. Mycological Research, 100(10), 1207–1217. https://doi.org/10.1016/S0953-7562(96)80182-1. Note that Kirramyces hebes is a synonym of Pseudophaeophleospora atkinsonii.
This wonderfully named leaf spot fungus is common in gardens, especially on Veronica salicifolia. It forms brown leaf spots with black pycnidia which contain green-brown conidia.
Synonym: Kirramyces hebes W.Wu, B.Sutton & Gange 1996.
White leaf spots with thin, colourless conidia. Somewhat common, especially on Veronica × franciscana.
It is reasonably common to find Peronospora on Hebe, particularly on Veronica × franciscana. None of these are described, and on iNaturalist they should be recorded as complex Peronospora grisea along with other undescribed Peronospora infecting Veronica.
Fairly common. Look for mildewed, sometimes distorted leaves.
