
Caroline Spray
Q I have a camellia in a pot which should be in flower by now. It looks healthy but has only one bud. What could be wrong?
A Camellias like light shade and must be planted in an ericaceous compost if in a pot and fed with an acid plant food. They are happy in a container but I suspect the lack of flowers may be due to lack of water or feed, so make sure the soil doesn't dry out. Use water-retaining granules to keep moisture in.
Q You advised me to use lawn sand on my grass but it has turned black.
What do I do now?
A Keep calm. The lawn sand has killed the moss as it is supposed to and this is what has turned black, not the grass. If the lawn is mostly moss it will look awful so rake the dead moss out then feed the grass to rejuvenate it.
Q I bought two Rosa de Jericho - how and where should I plant them and care for them?
A The Rose of Jericho or dinosaur plant as it is sometimes known is an amazing variety which supposedly pre-dates the jurassic age. You place it in water and it quickly hydrates itself and becomes green. When it dries out it hibernates until wet again and the process can be repeated hundreds of times.
Q I have a long bed full of winter-flowering heathers and conifers. Should I prune the heathers?
A With heathers that flower in the winter and early spring, all you need is a light prune to remove the dead flower heads.
Q I only have a patio as my garden and would love to grow strawberries. Can they go in a pot?
A Strawberries will grow very well in a container or a hanging basket. Buy strawberry barrels with holes in the sides so you can plant in the sides and the top. This way the fruit will hang down. Remember to water, feed and protect them from the birds with a net.




Telling when a plant doesn’t have enough water may seem to be a snap, but keep in mind that there’s definitely such a thing as too much water. If puddles form in your garden or an area of it’s quite soggy, all the pores in the soil fill. When this happens, no free oxygen, which needs to get to the roots, is in the. Meanwhile, some plant diseases (like mildew and blight) travel via water and can easily develop and spread in soaked conditions. Sodden roots blacken and rot, and all the aboveground growth subsequently dies. Garden plants in these circumstances, of course, need less water.
If there is magic to be found at the bottom of the garden, one would be sure to find it at the Gardening Australia Expo this weekend.
By Tina Mast, Correspondent
Sure, without moisture, plants die. Everyone knows that. But you may not know why water is so incredibly vital. The answer is threefold, actually:
Of course you can adjust your soil’s pH! Gardeners do it all the time when they know their lot in life is extreme soil, or even when they’re just trying to please some special fussy plant. It’s not a big deal. You just dig in something that nudges the pH in the direction you want it to go:
You can do a little detective work by observing which native plants are thriving and then confirming that they have a preference one way or another. Or you can run a soil test — use either an inexpensive kit or arrange one of those more-intense tests where you take soil samples from various parts of your yard and mail the dirt in to a lab. The nice thing about doing this more intense test is that the lab report not only tells you the pH (and a few other useful things, like the nutrient levels in your soil) but also gives you specific recommendations on how to improve or alter your soil. Check with your local Cooperative Extension Service — workers there may be able to run the tests for you at a minimal cost.
The pH (and you can find various arguments about exactly what pH stands for) is the measure of your soil’s acidity, and it’s often a huge area of debate among gardeners. I try to keep this discussion simple so I don’t make your head spin, especially if you have little or no acquaintance with chemistry. Too low of a soil pH means the soil’s too acidic, and too high of a pH means the soil is alkaline. Generally speaking, you want your soil pH to be on the slightly acidic side for the vast majority of garden plants. Extremes are rarely good.

