
Blue hydrangeas – a common roadside plant
We are very blue along our Taranaki roadsides in midsummer. I meant to get out with my camera a few weeks ago to record the roadside hydrangeas flowering in our area. Many are now passing over so I had to make do with the verge planted by our neighbour across the road. It has been bringing me pleasure for many weeks now.
Basically, hydrangeas are blue in Taranaki. This is to do with available aluminium in our acid soils. In our warm, temperate climate with adequate summer rain, they can just be planted and left. The many, many roadside hydrangeas will have been planted originally (seeding is minimal) and then left to their own devices. I don’t think anyone ever prunes them. This means that they are generally smothered with smaller flower heads. Pruning controls the size of the shrub and increases the flower size but lessens the number of blooms. Plants can survive quite happily with no pruning at all.

Weed or common wildflower? Agapanthus
It is the season of agapanthus. They are EVERYWHERE in this area, although they generally start from a deliberate planting and they are most often seen as amenity, road verge plantings rather than garden plants. They are controversial here on account of their seeding ways and the fact that they are resistant to the most common weed killer. But our roadsides would be so much the poorer without them.

Thumbs down to woolly nightshade
My definition of a noxious weed is a plant that invades and displaces more desirable native plants and I don’t think the roadside agapanthus are displacing anything more desirable. The seed is not spread by birds and generally falls close to the parent plant so is localised. I would be far more worried about woolly nightshade – Solanum mauritianum – than about agapanthus. It has no redeeming features and is highly invasive. Curiously, by this plant, I saw a small plant of Verbena bonariensis on the verge. As it is at least two kilometres from my garden where it is flowering, I don’t think I am responsible for this plant making its way to the wild. Most of our wildflowers start as garden escapes and this verbena is so light and airy in form, while being popular with bees and butterflies, that I am not convinced that it is going to be a problem in the comparative wasteland of road verges.

Chicory – not as common as I would like it to be
Chicory is another pretty blue that I wouldn’t mind making its home around here. It is a member of the dandelion family and is also used as stock food overseas so I can’t think it would do much harm here. I found this one growing on railway land when I stopped to photograph the red hot pokers.

Kniphofia in Lepperton
Like the hydrangeas, kniphofia generally start from a deliberate planting. Though some forms seed more freely than others in a garden situation, I have never seen them as a weed when on road verges. I once wrote about them – if you want to know why Father was a red hot poker and Mother was a blushing violet. I liked this scene of kniphofia and an old gateway between the state highway and the railway line in Lepperton this week.

Crocosmia – commonly referred to as montbretia
I wrote about crocosmia in my earlier post today. If we are not blue, we are carpets of red around here – or sometimes blue and red. They are just too happy in our conditions though they do look very pretty interspersed with the long grasses on some road verges.

Common fennel
Into the yellows, we have fennel, fennel and more fennel all around the district. I really like it, so much so that I have used it in the summer borders. I like the airy grace of those yellow umbellifers and the fine, ferny foliage. The insects like them too. There is a bronze form more commonly used as an ornamental but I am not willing to spend money buying a fennel and nobody has given it to me yet.

Evening primrose
I am also fond of the wild evening primrose (Oenothera biennis) which is common enough here and certainly common in wilder areas of our property. It doesn’t seem to do any harm and the bees like it.

Thumbs down, also, to convolvulus
Not all of our wild flowers are desirable. Mark keeps out the convolvulus, be it pink or white, though there is so much of it around, I can only conclude that others are less vigilant. It is a smothering plant, hellishly difficult to eradicate once it gets a foothold. This one is climbing up the Bertram Road swing bridge over the Waitara River but will very soon dominate the whole bank and bridge if not kept under control or taken out.

The wasteland of the sprayed road verge
Not all of our wildflowers are noxious weeds. But neither are all of the weeds wildflowers worth tolerating. On the other hand, is there anything much worse than this sprayed wasteland of a road verge? A practice that remains common around here.

Agapanthus a-plenty

And sometimes agapanthus and crocosmia – one starting from a deliberate planting, the other entirely self-introduced

I started by thinking I would do a comparison of tigridias. And then crocosmias. It was too hot to be out in the garden and I couldn’t go down to the shaded areas of the stream in the park to clear weeds on the banks and free up the water from some of the choking weeds on account of having stuffed my dodgy wrist doing this heavy work the day before.
I have spent some time separating the 



Gardening is usually a gentle activity in emotional terms. We may feel irritation, pleasure, satisfaction, disappointment or similar feelings. The feeling of sheer panic is probably largely limited to those gardening to deadlines with either an opening date for the public or a garden-based event. Occasionally, I feel real joy. I wrote about the
A decade on and I looked at my herbaceous borders this week, and my heart sang. “Yessss!” I thought. “We do actually have a summer garden at last.” A colleague and friend visited this week and was suitably gobsmacked. “When you said you wanted to do herbaceous borders,” he said, “I thought …” I can’t remember what he said he thought but it was along the ‘yeah nah. Unlikely. They’ll learn. It’ll never happen,’ sort of thing. It was very affirming to impress a professional colleague of similar experience level to us. These borders are now at what I call the ‘tweaking stage’. Altering the bits that don’t quite work. Were I more high-falutin’, I would describe this as ‘editing’ (the current term) or maybe fine tuning. But every day, these borders bring me great personal pleasure.

Many of us covet those gorgeous big blue-lilac alliums that are seen widely in UK gardens. I was a bit shocked to find they usually treat them like tulips – disposable, one-season wonders. But then I looked at some bulb catalogues there and they are cheap as chips to buy. If we are paying anything up to $15 a bulb here, we are not going to be treating them as annuals. I decided this spring that the easy to grow blue brodiaeas – particularly Brodiaea ‘Queen Fabiola’ (also known as a tritelia) are not bad substitutes for we poor, colonial gardeners. I am drifting these bulbs along one side and very pretty they looked in spring with the white iberis. And they are perennial, not one-season wonders.
But the fact that I don’t want to grow them myself does not stop me from seeing their merits elsewhere. Down the road, so to speak – as in maybe 5km and a couple of road changes down the road – is a fine patch of red cannas that I admired all last summer each time I passed. They are very… bold. And undeniably cheerful. When passing in a car, they are bright enough to catch my eye every time and they do appear to have a long season in flower. Pat, who owns these, offered me some when I stopped to photograph them yesterday, but I declined. I get my pleasure from looking at them in her garden.
If you are going to grow them, my advice would be to plant them in blocks of a single colour for maximum effect. I did not realise until I looked them up to get their species name that they are edible. My cursory study of them indicated that it is the tubers you eat, not the flowers. They are Canna indica, not lilies at all, but that is probably no surprise. Their widespread natural habitat takes in large parts of South and Central America, stretching up into the southern states of USA.
Cannas are a mainstay of the summer plantings at the Te Henui cemetery. Mercifully, Cemetery Sue who leads the team of volunteers who tend those gardens, has kept the colours separate.
Auckland Regional Botanic Gardens also uses big plantings of cannas in their summer herbaceous displays. Some of these are better than others. The symphony in pink was, I thought, charming on the day. The garish stripes in primary colours, not so much. 
As 2018 draws to a close, I decided that I do not have anything to say on
Firstly, January is for lilies.
February is peak summer here, when we get the most settled and warmest weather. And the
March is still summer here although the day length is shortening and the nights noticeably cooler. It used to be a very green time for us, because we have so much woodland garden and there is not a whole lot of high impact flowering in later summer woodland. We went to England three times to look at summer gardens and it is the sunny perennials that flower into this time. It has been really exciting putting in a large summer garden in full sun. I am extremely impressed by the echinaceas which flower from December to April and I have a very soft spot for the blue eryngium, even if I often need to put a stake in to hold them upright.
By April, we can no longer pretend that summer will go on forever. The flowering of the
May brings us the early camellias in bloom, in this case
June is early winter here. Definitely winter. I could have chosen Mark’s Daphne ‘Perfume Princess’ which flowers on and on through the winter months, but instead I picked Vireya Rhododendron macgregoriae. This particular plant has
July is our bleakest, coldest month. But there is light ahead. July brings us snowdrops and by the end of the month, we have the earliest blooms opening on both the deciduous magnolias and the early michelias. Nothing shouts spring more than the earliest spring blooms. Mark would like some galanthus varieties that flowered later in the season as well and he has tried all that are available, but none of them compete with Galanthus ‘S. Arnott’ for showy and reliable performance and the ability to naturalise in his bulb meadows that are a long-term project.
August – yes there is a lot of snow on our Mount Taranaki. All the better to frame our
I gave September to the prunus, the flowering cherries. It is probably the campanulatas that are the showiest and they flower in August and I had already allocated that month to magnolias. But we grow quite a range of flowering cherries and this one is down in our wild North Garden, an area that we find particularly charming at this time of the year.
October is mid spring. And for October, I chose the clivias yellow, orange and red, seen here with Hippeastrum papilio and dendrobium orchids in the Rimu Avenue. As I selected photos, I realised I was leaning to what we might call our backbone flowering plants – the ones we have a-plenty. Not all of them. I had to skip the azaleas, the michelias, the campanulatas and the hydrangeas owing to my self-imposed restrictions of one per month.
November brings us peak nuttallii and maddenii rhododendrons. The rhododendrons start in August, sometimes the first blooms as early as July, and flower well into December. But the beautiful nuttallis and maddeniis peak in November and are a source of great delight.
Finally, December is marked by the Higo iris down in the meadow in our park. What prettier way to end the calendar year? And gardening being what gardening is, we start the cycle again with a new year. Best wishes to all readers for a happy and rewarding 2019.