For me, the start of a new gardening year is marked by the opening of the first magnolia bloom. It is a very personal measure of time. This year, it happened this very week. Magnolia campbellii has opened her first blooms on the tree in our park. So I start a new season series of The Magnolia and Te Maunga – ‘te maunga’ being ‘the mountain’ in Maori. Our magnificent Mount Taranaki is commonly referred to simply as ‘the mountain’ by locals because it stands alone and is part of the very being of anyone who was born or now lives within sight of its presence. It is, by the way, an active volcano. With other volcanoes erupting in the world, Mark was moved to comment last week that we do at least live far enough away to get some warning if we ever need to evacuate. I have ascertained that the distance between our magnolia and the peak is 36km as the crow flies, so it is at the limits of my camera zoom.
Earlier in the year, we rashly agreed to open the garden for the annual conference of the NZ Camellia Society. I say rashly, only because the August date is coming closer. We closed our garden to the public coming up to five years ago now. While we maintain it to a standard that we are happy with, opening it to others requires a higher standard of presentation. I am beginning to feel the pressure. This week, I started working my way along the garden we call the rimu avenue. It is an area about 100 metres long and up to 25 metres wide, so large enough to accommodate a fair number of townhouses, were it in a major city. Fortunately, we are in the country, so instead of townhouses we have a backbone of 14 majestic rimu trees, now nearing 150 years old. Rimu are a native podocarp, botanically Dacrydium cupressinum. Mark’s great grandfather planted them back in the 1870s and photos show that they have doubled in size in Mark’s lifetime.
Beneath these rimu, we have what is probably the most complex planting of anywhere in our garden. Oddly, it occurred to me this week that it is the least demanding in terms of regular maintenance. This is not related to the complexity of the planting; it is to do with the fact that it is all in dry shade and also to the plant selection over time. In the last five years, we have gone through it and pulled out fallen branches and a bit of occasional debris but it has not had the loving attention to detail that I am currently giving it.
Over time, this area has become a largely self-maintaining matrix planting, an ecosystem in its own right. There is a little bit of seeding down, but not too much. The *volunteer plants* that arrive are largely ferns, nikau palms, native collospermum and other astelias. The most common weeds are the occasional germinating Prunus campanulata and the cursed bangalow palms. Most weeds need more light. That in itself is worth knowing. If you hate weeding, go for shade gardening.
All I am doing to jazz it up is going through and removing much of the fallen rimu leaf litter and debris which builds up over time, taking out the spent heads of bromeliads, thinning clumps where necessary, a bit of cutting back of shrubby begonias, zygocactus, thinning the thuggish Monstera deliciosa and Philodendron bipinnatifidum and general tidying up. It looks a great deal better for it.
For those who are wondering what plants we have growing in the rimu avenue, I will tell you that when we first went into the enormous subtropical glasshouse at Kew Gardens in London, we felt right at home. There seemed to be a large number of plants growing under glass that we grow under the rimu, an area that is completely frost free. We have a whole range of shade palms, schefflera, vireya rhododendrons, dendrobium orchids, many clivias red, orange and yellow, species hippeastrum bulbs, Crinum moorei, bromeliads galore, ferns and a whole lot more. Everything is interplanted so it is complex and layered full, interesting year-round, as well as low maintenance. Mark’s father first starting planting this area in the late 1950s so it has only taken 60 years of active management to reach this state of gardening nirvana.
While I am working ‘up the top’, as we say, Mark and Lloyd have been down in the park doing a tidy up of fallen branches and dead shrubs and trees. Chainsaw and mulcher work, mostly. For those who read these posts looking for handy hints, I photographed their techniques for dealing with the waste on site. While they may have removed the bigger pieces for firewood, the smaller lengths of branch and trunk are chainsawed into short lengths and laid beneath large shrubs or trees. Line the lengths up in the same direction and they look neater and more purposeful than being tossed higgledy piggledy. The leafage and finer material has been mulched on site and raked out over a bed of dormant herbaceous planting. These are not techniques for formal or tightly groomed gardens but we find it an acceptable process in informal and more naturalistic areas. And we like the philosophy of keeping the cycle of growth, death and then decay nourishing further fresh growth in the same location.