Tag Archives: garden edging

It is August – time for magnolias, laying paths and killing moss

Magnolia campbellii ssp mollicomata ‘Lanarth’

Lanarth down by the water in our park

As August arrives, there is so much happening in the garden. Every day sees something else in bloom and now I get anxious that if I forget to look for a few days, I might miss something. I tell you, spring can be stressful.

Mark’s yellow Lachenalia reflexa hybrid

But our thoughts go out to overseas readers whose lives continue to be disrupted, discombobulated and sometimes turned upside down by Covid-19. Never has New Zealand felt so comfortably remote and self-contained, a small cluster of islands holding the unpredictable forces of chaos at bay, so far. May you stay safe and well, wherever in the world you are.

We are inching ever closer to finishing the new summer gardens, or at least to completing this stage of development. There are just the path surfaces to be laid and that has to wait until the man I hope can deliver the materials and arrange a bob-cat returns from holiday next week. We solved the problem at one end where the steps down to the garden were at a lower level than the camellia and michelia hedge that forms the backdrop. It was always going to involve some means of separating the levels. We priced steel edging because I really like that au naturelle, unobtrusive, thin look of gently rusted steel. Buying the branded product specifically designed for garden edging was very expensive indeed and that was without factoring in freight. Ever-handy Lloyd priced buying the steel locally, cut to suitable size, and it came in at about a third of the price but still somewhere over $1000. It was not going to bring me enough pleasure to warrant spending that amount of money.

Compromising with a stained timber edging

Much and all as I dislike tanalised timber in the garden, I compromised and said that would be okay as long as we stained all bits that will be visible to charcoal black. It was a solution that cost $103 (to buy six metre lengths of timber) and once the paths are laid, I do not think it will be obvious at all. The paths will be built up by about eight centimetres so there will not be a whole lot left visible.

A handy bobcat back when we started work on these gardens

Because it is going to take up to 30 cubic metres to lay all the paths, our plan – subject to the advice from the man currently on holiday – is to lay a base core of pit metal compacted to about 3 or 4cm deep and then lay the crushed, creamy yellow limestone on top of that to another 4cm. We think the pit metal will be much cheaper than limestone. We need to hire a bobcat and operator because none of us want to be carting 30 cubic metres of anything and the bobcat will be able to do a lot of the compacting that is necessary. If you have never seen a bobcat operating, believe me they are fast, manoeuvrable and quite mesmerising to watch.

On another practical level, a packet of Cold Water Surf washing powder entered my life. I had forgotten about its existence. It is vile, over-scented stuff that I would never use in the laundry but others may not mind that overpowering scent of chemical fragrance. We use unscented washing powder in this household of sensitive skins. But damn, that Cold Water Surf is a whizz on killing moss.

People in drier climates will not relate to the issues of excessive moss and lichen growth that we get here. There is nothing wrong with some, but we can get way too much. Sometimes we water blast (jet wash) the paths but that also takes off the surface of the concrete and flushes out any filling between pavers. It is just as fast for me to scrape off the top layer of moss, sprinkle Cold Water Surf to kill what remains and then use a stiff broom to sweep the residue off.

And it can kill very fast. This rather deep-rooted moss browned off within hours and died soon after.

I am no chemist so I struggle to get a grip on the difference between carbonate, bicarbonate and percarbonate. But as far as I can see, the active ingredients in many of the expensive, branded moss killers are often sodium carbonate (washing soda or soda ash), or sometimes sodium percarbonate (which is washing soda and hydrogen peroxide – a common ingredient in eco-friendly bleaches and other cleaning products).

You can buy both sodium carbonate and sodium percarbonate in powder form and I have done so but it worked out relatively expensive to use in the garden when cheap Cold Water Surf works just as well. Logically, this must mean that I was spreading the pure product too thickly when it can be extended by adding some sort of neutral carrier (Mark suggested sand). At a practical level, the products were fine powder and the coarser texture of the laundry powder makes it easier to spread evenly. Also, logically, any proprietary laundry powder should work unless some have a higher percentage of washing soda than others and that I do not know.

I am wondering whether it will work on our sandy coloured pavers in our front entrance courtyard. I water blasted these a few years ago. It was my first ever go on the water blaster and it took a lot longer than I thought it would. It was also wet and messy and blew out the sand between the pavers which Lloyd than had to refill. But they looked like new when done. Now they are blackened and discoloured again. I know there are branded products that attach to the hose that will also work and are quicker to use, albeit expensive. If laundry powder will do it, that appeals to my economical nature and avoids buying another product sold in a hard plastic container. I shall experiment and report further.

Narcissus Peeping Tom

Tikorangi notes: narcissi, garden edgings and a happy plant breeder

The snowdrop season is all but over already. It is charming but brief. The narcissi, however, have a longer season, at least in part because we can grow a much wider range of species and hybrids. Yesterday felt like a winter’s day – the last gasp of winter, I hope – so I headed out to pick one each of the many different varieties in flower. We don’t grow many of the larger ones at all, preferring the charm of the littlies, the dwarf ones. Bigger may be better when it comes to magnolias – at least in our eyes – but daintiness wins with the narcissi. Most of these are named varieties though Mark is also raising cyclamineus seedlings to build up numbers for planting out and to get some seedling variation within them. The cyclamineus are the ones where the petal skirt sweeps back, sometimes completely reflexed, giving them a slightly startled appearance. He was intending to plant many of these down in the park but hadn’t got around to it so offered them to me for the new grass garden.

Drifting dwarf narcissi through the new grass garden. Camellia Fairy Blush hedge and Fairy Magnolia White edge the garden on both long sides. 

I have now compromised the big, bold, chunky planting in waves that is the hallmark of the new grass gardens by drifting hundreds of dainty, dwarf narcissi through them – though far enough out to escape being swamped by the large plants, for several years at least. It adds seasonal interest to an area that will not come alive again until later in spring.

Informal bark edging and bark and leaf mulch define the garden area

After much consideration as to how we wanted to complete the grass garden with regard to edging, mulch and path surfaces, we have gone for the casual, organic and local options. As soon as I started to load in the wood and leaf mulch that a local arborist delivered, I realised that the beds would need an edging to hold the mulch from spilling over. My idea of a seamless transition between bed and path was not going to work. We have pine bark to hand – left over from getting the firewood out from a fallen pine tree so I am constructing small edges out of that. It lasts for many years. The paths are still bare earth (we will probably use granulated bark on those) but as soon as I made the edgings and laid the mulch, it took on the appearance of a garden. It is a casual look but one that sits easily with us with the benefit of being low cost and, as Mark keeps saying, the use of organic materials adds carbon to the soils.

I am laying the mulch on fairly thickly – around a forefinger in depth which I measured to be about 7cm. Because it is fluffy, it will compact to less than that but if I see any weeds coming through, I can top it up.

Fairy Magnolia White – not only a beautiful flower form but a very long flowering season, beautiful velvety buds, good foliage and perfume

Mark is a quiet man, not given to blowing his own trumpet, but sometimes I hear him murmur a comment of deep contentment at a plant he has bred and named. So it was this week as we looked at the avenue of Fairy Magnolia White and Camellia Fairy Blush. “I picked White because it had a pretty flower,” he said. And it does. In a world of floppy white and cream M. doltsopa flowers, Fairy Magnolia White stands out with its beautiful star form. There were a lot of very similar sister seedlings to choose from in that cross and as a breeder, he always worries whether he picked the best one. I think he finally decided that he had indeed chosen the best which is just as well, when you think about it, because he will only ever name and release one of that cross

Camellia Fairy Blush also has a long flowering season, drops its spent flowers cleanly and clips well

Camellia Fairy Blush, planted as a hedge beneath the two avenues of Fairy Magnolia White, is also a continuing source of satisfaction and delight to us, even if it is a constant reminder of a missed commercial opportunity. It was the first camellia he ever named and sold. Back in those days, protecting a plant as our intellectual property was not even on the radar and now Fairy Blush is sold widely throughout the world and few know that it originated here and was Mark’s selection. We have even seen it branded overseas with other nursery names but we know it is ours. That is life and it is a very good camellia and continues to be a source of pride and pleasure to the breeder.

Fairy Magnolia White and a very blue spring sky