Remedial action

We had our arborist in again this week and there is nothing like getting some tree work done to refresh an area.

The leaning tower of gum and rātā which was rather larger than it appears in this photo

The catalyst was this leaning gum tree which carried the weight of a rātā vine. The host tree was in poor condition and the lean was certainly getting more pronounced. We worried that the weight of the rātā at the top of the tree would bring it all down, potentially bringing down other trees with it and, in the worst case scenario, cutting the power lines to the house. With increasingly frequent extreme weather events these days, we err on the side of anticipating risk and trying to avoid damage.

Circled in blue is the foliage of the rātā vine weighing down the twin trunks of the old gum tree. it looked to be a case of when, not if, it would fall.
Rātā vines climbing the old gum tree trunk

I just looked up rātā, which are a native plant. The Department of Conservation site tells me we have 11 species – 3 are trees, 1 shrub and 6 climbing vines. It is probable that ours was Metrosideros fulgens. It did bloom for us but was never as showy as its cousin, the pohutukawa and the flowers were always right at the top of the canopy so only visible from a distance.

We chose to keep some of the trunk to keep the rātā. It may still fall but it won’t cause much damage if it does.

We chose not to fell the gum completely but left about 3 metres of it to keep the rātā. While here, we asked the arborist to drop the last remaining silver birch tree nearby which was not in good health. Once it was down, we could see from the stump that it was completely rotted out in the middle of the trunk with a hollow centre. Silver birches are not good in our climate and their only redeeming feature, in my eyes, is that beautiful tracery of the bare branches against the winter sky. And we dropped a third small tree that had died. It was one Felix had brought back from New Guinea in the late 1950s but it was never as interesting as the lovely Schefflera septulosa, Ficus antiarus and Rhododendron macgregoriae that we still have from that intrepid plant hunting trip.

The silver birch set against the blue winter sky, just before it was felled

Dropping trees lets light in again and opens up areas that then need a touch of renovation. In mature gardens, getting light back in to shaded areas is a constant issue and often requires some quite major work on large trees. Not many plants are happy to grow in deep shade, and few of those are desirable ornamentals.

A mix of birch and gum for firewood and waste wood from the unnamed New Guinea tree

Our arborist is very good at cleaning up after himself so he left that day leaving clear space. Empty, but clear. Lloyd, bless him, removed the lengths of firewood to our enormous woodshed the next day and Zach moved in to replant. It was all done and dusted in a couple of days but, with more light, Zach and I are now turning our attention to somewhat messy areas beyond that immediate zone. Which brings me to Zach’s orchid structure.

An installation of orchids that looks right at home from the start and adds a point of interest in an otherwise unremarkable spot

The wood from the felled New Guinea tree was too light to use for firewood. It needed to be stowed elsewhere to break down naturally and I suggested to Zach that he use it to make a base for some orchids as a punctuation point at the uninteresting end of an adjacent garden bed. Zach is a keen orchid man. A couple of hours later, I came back to find his construction which exceeded all my expectations. That is all waste wood, already filled with cymbidiums and dendrobiums which are divisions from other plants around the garden. What was a dull space is now a feature which will look charming as the orchids come into flower over the next months and already looks as though it has always been there.

Dropping trees is not a cheap activity but it opens up new possibilities.  

A postscript, for those of you for whom chainsaws are a part of life. Our arborist used an electric chainsaw and he declares them to be an absolute gamechanger in every way – safer, quiet, much cheaper to run and a massive improvement in environmental terms. We are still using petrol chainsaws here but Mark was saying that next time we need to buy one, we will buy electric. I have heard others praise them but to have a professional give such a glowing reference convinced me they are the way to go.

Oxalis – by no means all bad

Sunny Oxalis luteola. These bulb oxalis only open their flowers in the sun.

It is easier to maintain specific plant collections when you have a nursery. In that situation, special plants are maintained under nursery conditions and given more individual attention and care than in general garden collections. We used to carry a large array of different bulbs when we were doing mailorder and they were repotted on an annual basis, or at least every two years. We only listed bulbs if we had enough stock reserved to keep going for the following years.

Lilac O. hirta with apricot O. massoniana behind

We put out our last mailorder catalogue in 2003 – twenty years ago – even though I still get email and phone requests from people wanting to order plants from us! In the years since, I have planted most of the good bulbs in the garden, scrapped some that may have been botanical curiosities to half a dozen afficionados throughout the country but were of little merit as garden plants and the rest have languished under a regime best described as benign neglect. Some have not survived this laissez faire approach but, with an extra pair of hands, we are starting to salvage what has.

Zach’s oxalis collection is continuing to grow

Our gardener, Zach, is doing his apprenticeship and one of his modules is on plant collections. I suggested the ornamental oxalis as a well-defined collection he could assemble in one place. There is no doubt that most of these thrive and look their best in containers. I have never forgotten Terry Hatch’s magnificent display of oxalis in pots at Joy Plants and that must be 30 years ago.

13 different flowers and 10 different examples of oxalis foliage.

For years, I maintained a collection of my favourite oxalis in pots to be brought out when they look their best in autumn and early winter. I hate plastic pots in the garden so they were all in terracotta, ceramic or vintage concrete pots and truly, I just got fed up carting these heavy pots out of the nursery and into the garden and then back again when they were over, not to mention the annual repotting. I gave up and planted them out and let them fend for themselves. The most invasive of them, I put in shallow pots and sank the pot in the garden, but I rarely repotted them.

One of the very best oxalis when it comes to good behaviour and generous flowering over a long period of time – O. purpurea alba

Zach has so far isolated 23 different forms of ornamental oxalis that grow from bulbs. Most are from the garden here and a few he has added from his own stash of plants at homes. (Note: he has just sourced another five from a local market, he tells me.) Amazingly, I think we only lost two varieties in the years between my getting them out of the nursery and him getting them back in again and they weren’t a great loss. I suggested that he also pot up the weedy ones we battle all the time. The creeping oxalis – O. corniculata – which we have in bronze and green is the worst and we have a pink one in a patch of grass that may be O. corymbosa.

O. bowiei

Then there are the more herbaceous oxalis. The best known of these is probably what we call a yam in Aotearoa New Zealand, although technically it is growing from a tuber. Commonly known as oca in Spanish, it is a food crop and one we grow ourselves, semi naturalised in the vegetable garden. Botanically it is Oxalis tuberosa.

Oxalis peduncularis

We have Oxalis peduncularis growing in one of those awkward, narrow borders against the house and it looks and grows more like a succulent, flowering for most of the year. Now that I am getting my eye in again, I have spotted another plant that is like a dwarf peduncularis but I have never even thought about what it is because it has just always been there, in its place. It must be another oxalis.

The family is huge overall with somewhere over 550  different species in the wild across most of the world except the polar areas. I have only just discovered that we have a native one – Oxalis exilis. It is a small creeping one and I think it is probably one that I assumed was corniculata, too.   

Oxalis massoniana – one of the prettiest in colour and because of its compact growth, it can form a tidy mound

The thing about plants is that the more you learn about them, the more interesting they get. There are many worse rabbit holes in life that one can go down than the intricacies of the oxalis genus. I can see that Zach’s oxalis collection will probably continue and expand long after he has fulfilled the requirements for his level 4 apprenticeship.

O. eckloniana – probably the largest flower one we have

I am wondering now whether I can get him onto isolating and sorting the intricacies of the lachenalia collection next. That went pretty much the same way as the oxalis collection when we retired from mailorder but is more complicated because of their readiness to cross with each other and produce natural hybrids. He doesn’t need to do it for his apprenticeship but I think he would find it very interesting and it would be satisfying to sort it out again. At least all the lachenalias are bulbs and there are only about 133 species so that makes it more tightly defined.

Judge not by the worst members of the family

Dramatic dahlias

When the sun returned on Friday, I realised that it was not the rain that had dampened my spirits, it was the low light levels. Clearly, I was never destined to live in northern Europe where I am sure I would suffer from seasonal affective disorder for months every year.

Here in Taranaki, Aotearoa New Zealand, we sit at 39°S which is a similar latitude to California, Ibiza and Sardinia – or Madrid is the usual northern latitude comparator to our country. Not that our climate bears any resemblance to those locations. We are a long, thin country set in the middle of vast oceans which moderates our climate and brings us regular rain – too much rain of late. We have a very clear atmosphere and that clarity of light is apparent in every season where we live. At the winter solstice, we still get around 9 ½ hours of light a day and that is often bright light. No wonder I am accustomed to high light levels.

I have few photos of herbaceous dahlias but this one in an open garden in Canberra, trained, cosseted and protected by an umbrella amused me at the time.

The return of the sun had me out looking at the tree dahlias. These are difficult plants to accommodate in the garden but they certainly have the wow factor at this time of the year. All summer, I have seen friends posting photos of their prized dahlias and, while I admire their enthusiasm, the big, blousy, summer dahlias do not bring me joy. Too many murky colours and novelty forms for my personal taste. The tree dahlias are a different matter.

Dahlia imperialis

What is not to love about the soaring heights of D. imperialis lilac chalice blooms? When I say soaring heights, because we are growing them in semi shade, they can be stretched up to around 5 or even 6 metres.

Dahlia ‘Conundrum’

D. imperialis is of course a species and the other species we have, D. excelsa, flowers even later in the season and grows even taller. It is not even showing colour yet. New Zealand plant breeder, Dr Keith Hammett, has done a lot of work over the years to create more amenable tree dahlia hybrids. We don’t have many of them and don’t have the right places to grow many more but I wouldn’t be without his yellow ‘Conundrum’ which flowers pretty much all summer and autumn coming into winter.

Dahlia ‘Timothy Hammett’

‘Timothy Hammett’, named for Keith’s son, is a beautiful and unusual shade of cerise-purple with smaller flowers. Because these tree dahlia blooms have visible central stamens and pollen, they are alive with bees and butterflies at a time when other food sources are getting sparse.

I watched the monarch butterfly flicking away the bee in an irritated manner

I have long since lost the name of the larger flowered, strong pink one we have – if it was ever named – but it is another worthwhile Hammett hybrid. If you want to know more about Keith’s tree dahlias, this article by him in the April Gardener is well worth reading. There is an impressive flower lay showing the range of colours he has reached in his breeding, starting from just four different tree dahlia species.

All too common a sight as one of the leaders falls over

I think we need to lift and divide our plants. This has not been done for many years and the tubers on some are very close to the surface. All we have done is to cut them down to the ground when they have finished flowering and reached their weather-beaten, scruffy stage – that is, if they have not fallen over with their own weight before then. They are brittle and vulnerable, especially the tall species. They are not exactly on a scale that I can stake, either.

A small but showy array

I think if we lift them and thin out the tubers, replanting them somewhat deeper than they have been, they may well reward us with sturdier growth and, hopefully, stay upright longer – or at least until they have finished flowering. Until then, I will just enjoy their glorious display as we count down to winter’s arrival. I prefer my life filled with light and colour.

A purple parcel day

In a week of more greyness and rain, the colour purple took my fancy this week. How pretty is my purple flower lay? I was surprised how many purple flowers I found in the rain and the first blast of winter cold. I included some pastel lavender flowers; had I extended into the pinker lilac hues, I could have doubled the number of different flowers.

It was not the coronation of King Charles that made me think of purple. It is the traditional colour of emperors, reserved for them because it was so difficult, tedious and expensive to extract the purple pigment to use as dye from snail mucus. Charles 111 may have many titles but emperor is not one of them, I think.

I saw very little of the coronation but it seemed, as the king changed his cloaks of many colours, that the colours of the British crown are more about red, white and royal blue with liberal lashings of gold.

No, it was the arrival of Mark’s Veitch Memorial Medal accoutrements. These were despatched by rather slow mail from London, on account of us not being able to travel to the official ceremony. Some of us remember when airmail was the expensive Fast Post option and the cheap alternative was slow boat. These days, airmail is a great deal more expensive but without the speed of delivery. Indeed, it can take as long as the old slow boat option. The certificate is impressive – a full A3 size. Oddly, because we are not given to public displays of such things, Mark felt it warranted hanging so it is destined to join the rogue’s gallery of family photos and pictures that adorn the private area of the spacious upstairs landing.

The purple boxes were discreetly impressive. One holds the medal while the other holds a golden and enamel lapel pin. They can go in the sideboard that holds his father Felix’s matching Veitch medal.

Mark is a reserved man but his delight was palpable.

From flowers in the gloom to the Coronation quiche

You can tell from the peeping blue sky that this photo is from my archives and not from the unrelenting greyness of yesterday. But the Dahlia imperialis is in flower again and looking very pretty, despite the rains.

We may be growing older but at least we keep learning things. I recall when our nation first learned about liquefaction in the Christchurch earthquakes. Next was graupel which must have been during the snow event of 2011. This year it is atmospheric rivers. I doubt too many of us knew about these before the Auckland anniversary floods followed by Cyclone Gabrielle. We received weather alerts this week about a potential atmospheric river becoming stalled over Taranaki from Wednesday.

In the event, it didn’t amount to anything close to the devastating floods suffered by many in more northerly and eastern areas of the North Island already this year. It rained hard on Wednesday night – over 90ml which is heading towards 4 inches, Mark tells me from his rain gauges – but since then it has just been showery and drizzly and unusually gloomy. Given that an atmospheric river can release more water than is in the Amazon, we feel we may have dodged a disaster this time.

Lapagerias in red and white at the back of the house beside the wheelie bins. They are not a tidy climber and usually need a great deal of patience but, once established, their flowers through autumn and winter are a pleasure.

But gloomy is as gloomy does. At least it is not cold. While autumn is here, our daytime temperatures are still sitting around a pleasant 20 celsius and the nights are mild. When the rain stopped yesterday, even though it remained unrelentingly grey, I walked around the garden looking for bright spots.

Salvia madrensis in yellow with Chionochloa rubra in front and Miscanthus ‘Morning Light’ behind
Salvia mexicana ‘Limelight’ with Elegia capensis

I have been slow to be won over to the charms of the salvia family. The plants tend to be rangy, leggy, things lacking form but now I have the right places to grow them. They are generous in their blooming habits, flowering for months on end and what I earlier saw as formless sits comfortably in more casual plantings. I think I may need to expand the range and there are certainly plenty to choose from.

Plectranthus don’t have a good reputation but we accept a few in more casual areas. At least they are easy to hack back and to pull out when they start straying beyond their designated home space. I enjoy that lilac-blue haze behind the Ligularia reniformis. I have no idea which plectranthus this one is but it has a lovely burgundy colour on the underside of the foliage. That gnarly, dead-looking trunk in the centre of the photograph is the remains of my treasured jacaranda that was taken out by Cyclone Dovi in February last year.

But wait! That is new life on the gnarly old jacaranda trunk. To our great surprise it is shooting again. When Zach spotted the first tiny signs of life, we thought it unlikely to survive because the outer layer of bark on the trunk had been stripped away entirely and we didn’t see how it could sustain new life. But here we are. That shoot is already quite substantial.

I am somewhat dismissive of abutilons which seed way too readily. We weed out most of them but I try and keep the odd one in pure yellow, at least one pure red one and any that have clearly crossed and come in a pleasing orange shade. Anything in murky colours – and there are plenty of those – or in the wrong place is unceremoniouly pulled out and consigned to compost.

Underneath the rimus, the bromeliads provide us with winter colour and a somewhat unique perspective on exotic woodland plantings. Ralph is a bit underwhelmed but he does have a resting sad face and that does not indicate a sad nature. The startling pink variegations in that photo with him are pretty interesting and seem to have stronger colour this year for no discernable reason.

Vireya rhododendron macgregoriae

Right on cue, Felix’s New Guinea collection of R. macgregoriae flowers again, as it has done for sixty-five years now. For a vireya, that is an extraordinarily long life span. In our conditions, they are all too often short-lived. All we ever do is dead head it and take out any dead wood. It doesn’t get fed at all but each year it puts on a mass display.

I can not in all honesty say that my corner of the world has been gripped by Coronation fever but I was amused when Canberra daughter announced that the Coronation Quiche looked preferable to its predecessor, Coronation Chicken. Never having tried the latter, I had to google the recipe and that combination of chicken and dried apricot with mayonnaise is very 1950s/60s. Daughter entered into the spirit of the occasion by making an acquaintance with lard, albeit Australian lard, and even posted a photograph of her preparations.

Sadly, she was underwhelmed by the result. While the lard gave a good, flaky pastry, she declared the ratios to be “a bit weird, it’s a lot of cheese and a lot of spinach. The spinach made it a bit earthy and herbaceous. Plus I had forgotten I don’t really like tarragon.”

Not the Coronation quiche, in the end

She remade it, substituting parsley for much of the spinach and adding bacon and declared that preferable.

Going back to Coronation Chicken, I do hope that the New Zealand version was not prepared with Highlander mayonnaise back in the day, Highlander mayonnaise being of a similar era and based on a can of sweetened condensed milk. But I bet it was. With added curry powder from Greggs. ‘The horror, the horror.’