
Your Gardening Questions Answered
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Editorial Hello there, John & the Global Garden Team |
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Your Gardening Questions Answered Stumped? Need some gardening advice? Send your
garden question to us by clicking
here and filling out our question
form. | |
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home made soil wetter – VIC |
Destructive grubs – NSW |
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Want a snail bait that is both effective and unlikely to
harm your pets? | |
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Topic and Question |
Answer | |
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home made soil wetter
– VIC |
I know it is expensive – I buy a big bag and make it last one whole season (spring to autumn). It is worth it though, as I don’t know of a home made version. I would not be spraying detergent around willy-nilly as you could end up with more problems than you started with. |
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Old tyres as garden beds –
NSW |
There is some evidence to suggest that the
cadmium given off from old tyres makes them a poor choice in which to
grow anything you | |
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fruit trees – VIC |
Bad news Gary – it sounds like your apricots and nectarine have eutypa dieback (formerly known as gummosis). Try this Sth Aust. Government website for advice. | |
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frangipani flowering – VIC |
We gardeners are a contrary lot aren’t we? You are doing very well to keep frangipanis alive in Melbourne because they are more suited to the tropics. They need regular watering from spring through to autumn and have to be kept on the dry side throughout winter when they are dormant. Sun is very important. They need a fair bit of heat and sun to make them flower - a north facing position with a concrete or brick wall behind them will help. I would give them a slow release fertilizer in spring. | |
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tree fern – VIC |
If it’s a soft tree fern (Dicksonia) you can saw it off and replant in the ground (bury about 30cm in the hole) but if it’s a rough tree fern (Cyathea) you will need to dig up the root ball for a successful relocation. |
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plants for deep
shade – NSW |
This is a challenging situation for any plant. Deep shade, dry dusty hydrophobic soil which is probably on the acidic side. If anything can survive agapanthus probably can! Lomandra really like a bit more water. You would need to prepare the soil well and water regularly to get them established. Use a soil wetting agent to reduce the hydrophobia. | |
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cumquats not fruiting – VIC |
You’ve given the plants a heck of a shock and they are putting all their energy into recovery e.g. producing leaves. Try holding back on the fertilizer – it sounds like they’re getting too much of a good thing. They flower in early summer so try not to prune them at that time. | |
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Lawn seed
variety to use – QLD |
Running grasses would be best as they will help stabilize the soil. Your local turf suppliers recommend buffalo grass varieties, couch grass varieties, kikuyu and zoysia grass. You could consider getting the area hydroseeded as this would bind the soil together while the seed germinates. | |
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destructive grubs
– NSW |
It sounds like they are the grubs of the African black beetle. The grubs
eat the roots of a wide variety of plants. There are several products on
the market for dealing with them. I find the beetles seem to be
attracted to outside lights at night and I find piles of them in pots in
areas that are lit at night. Try moving your pots and baskets to an area
not lit at night or turn a light off if you can. |
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Getting
rid of Plumbago plants – NSW |
You can either dig the plants out including as many of the roots as possible or the less exhausting method is to cut the plants off at ground level and paint the stump with glyphosate immediately (not 5 minutes later). You may have to persist in treating any regrowths until they stop. | |
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swimming pool plants
– NSW |
I wonder whether it might be better to buy a couple of large pots or planter boxes and plant into them. That would get the plants up and away from the splashes. Bananas should do well and will get up in height so you have room to put something beneath them. | |
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indoor plants |
This is a rather tetchy plant and will drop its leaves if it dries out or gets too wet, too hot or too cold. You can try watering it with some seaweed solution (a good tonic) and keep it in bright but indirect sunlight with consistently mild temps between 18 and 25 degrees. If the temp plunges at night it won’t like it. | |
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treated pine logs
– NSW Six months ago I bought treated pine logs to make a raised garden it says arsenate on the tag. Is this safe to use for growing vegies in? |
A good rule of thumb is to never used treated timber to build anything that comes in contact with soil where you are growing edible plants. Red gum sleepers are a safer option. | |
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transplanting orange tree – WA When & how is it best to transplant an orange tree, approx 3 -4 yrs old in Perth. |
Winter is a good time to transplant almost anything. You need to make sure that the ground is moist before you dig up the root ball taking as much soil with it as possible. Wrap the root ball in hessian so the sandy soil doesn’t all slip away. Have the hole where it is to go already dug. Place the tree in the new hole and at the same level as the old spot and water in well with a seaweed solution. Don’t fertilise until the tree shows signs of new growth. If it has any fruit on it remove this before transplanting. | |
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pruning a
Caliistemon NSW I have two very large Captain Cook Callistemons that are starting to get top heavy and I fear if I don't prune them the main trunks will end up splitting and killing them. Should I give them a severe pruning to save them at risk of them being ugly. They are both about twelve years old and grow on a slight slope, they have almost finished flowering. |
I had the same problem and I pruned my plant back to a stump only a metre
or so high in early winter. It shot away again in spring quite happily
and is now a dense shapely bush. Keep the water up the plants to assist
them in re-shooting. | |
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Pruning
Rhododendron – VIC Our Rhododendron received a lot of leaf burn in the hot spell just recently and I would like to prune it back. I am looking for some advice on when I can do it. I have never attempted it before. |
I wouldn’t be pruning it or fertilizing it until it showed some signs of
new growth – probably after flowering in spring. If you really wanted to
prune it before then, you could do this in winter but you would
sacrifice this spring’s flowers. Keep the moisture up to the roots and
water with a seaweed solution. |
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