DOWN TO EARTH

Well it’s great to see all this rain, but we’re not greedy here in Helensburgh - we’ve had enough now - I’m sure we would be quite happy to let the inland areas have some of our downpours. As welcome as all this rain is, it presents problems for plants in that it encourages the growth of fungal diseases such as mildews. So be on the lookout for blackened leaves and dieback. Spraying the leaves of vulnerable plants with Anti Rot, a systemic phosphoric acid fungicide, will keep the fungus at bay. Remove and bin any infected leaves to reduce the risk of reinfection next year.
Also be aware that any potplants that are out in this rain will need to have their saucers emptied regularly. It there’s one thing that most plants hate, it’s wet feet. This is not just because roots can rot if they are constantly wet, but more because roots need oxygen, and if all the air spaces around them are taken up with water, then they can literally drown.

If you have an area that is constantly wet and boggy then you have a few choices.
* If the area is a heavy traffic zone the best thing to do is put in drainage (either above or below ground) and pave the area or mulch with gravel.
* If, however, the area is out of the way then why not use this naturally wet zone to grow some plants that love ‘wet feet’. Not only will they thrive, but the area will no longer be a problem. Some plants to try are Callistemons (bottlebrushes), Banksia robur (Swamp banksia), Canna Lilies (there are dwarf varieties available in several colours), Louisiana irises (but beware slugs and snails). Restio tetraphyllus is a native sedge that produces lovely lime green furry upright stems. It is great for around pools and will tolerate drought as well.
Lyn Johnson, Horticulturist