Here are key autumn garden tips plus 7 top suggestions of plants to plant now.
16.09.2023 - 04:05 / irishtimes.com / Fionnuala Fallon
Q: I don’t know the name of these trees but they seem to be dying, with casting of leaves getting worse and worse. Can you help? BMcW, Co Donegal
A: Your trees are a decorative, non-native, sun-loving evergreen species that hails from New Zealand and is known as the cabbage tree, or Cordyline australis. Despite its tropical, somewhat truffula tree-like appearance, it’s generally considered hardy in Ireland, except in very cold, inland parts of the country where it can sometimes struggle. Although it can happily tolerate temperatures as low as minus 7C, last winter’s sustained, exceptionally cold weather meant that even mature plants growing in coastal Irish gardens suffered.
I’m guessing this is the cause of your cordyline trees’ unhappy appearance. To help them recover, I’d suggest cutting back all of their dead or badly damaged swordlike leaves. Then use a sharp secateurs to prune back any dead or damaged sections of the trunks. In some cases, this might mean cutting them right back to the base but they should soon reshoot. To help them along, spread a 5cm layer of organic mulch around the base of the plants and then top dress with a slow-release organic granular fertiliser in spring.
Occasionally cabbage trees that have been badly affected by extreme winter cold will also develop a condition known as cordyline slime flux, where both the frost-damaged crown of the plant as well as its frost-damaged leaves subsequently become infected with bacteria. When this happens, the affected parts of the plant have an unpleasant smell and an orange or white liquid might ooze from them. Again, the only solution here is to prune away the affected parts of the plant, which will usually soon recover. Just make sure to protect any
Here are key autumn garden tips plus 7 top suggestions of plants to plant now.
Q: You mentioned a while back that you were creating a flowering hedge. I would love to know what plants you picked? MF, Co Leitrim
We’re in Holland, Michigan, today visiting Terri Holden’s beautiful garden.
Q: A honeysuckle and an elder tree in the garden have been ravaged by aphids. I was hoping natural predators might have a feast but there’s no let up so far. Is it a seasonal occurrence due to spring weather conditions or should I get pruning? JMcK, Co Dublin
Collaborative post
Collaborative post
It’s at this time of year that our little farmhouse begins to be love-bombed by butterflies, which flutter into its rooms through open windows to perch on the centuries-old walls and bask on its sunny windowsills. They are small tortoiseshells, a common species easily identified by the tiger-like stripes and series of tiny, pale blue dots stippled along the edges of its dark-orange, paper-thin wings. In early autumn the adults go in search of somewhere safe to overwinter, during which time our house is strangely irresistible to them. Clearly the building has always had this special charm. When we first bought it, its old, sun-filled rooms were filled with their tiny, dusty remains, poignant reminders of summers long gone.
Today we’re in Raleigh, North Carolina, visiting with John Matthews.
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