Perennial Hill in Mittagong is one of those rare blooms – a garden open in summer. Most gardens around Sydney open for a spring bonanza of roses and blossoms and fresh new growth on trees or for a fiery blaze of autumn colour. But for Julie Hulbert, who with husband Craig makes Perennial Hill, summer, when the perennials she loves are at full tilt, is the best time in the garden.
The garden slopes from the road to a two-storey house whose burnt-red render makes a striking backdrop for the plantings. Paths wind past densely planted flower borders and a room of richly textured and coloured shrubs to the house. In front is a tear-shaped bed of herbaceous perennials that in winter is totally bare save for a blanket of mulch and a lick of frost and in summer is a towering mass of colour, with dahlias, heleniums and monardia interweaved among tall grasses. Even standing by that massive growth spurt is invigorating.
Around the back is a cypress-hedged room with deep mixed borders where cardoons, buddliea and plume poppies looms over shasta daisies and phlox. A terrace looks over blowsy flower borders towards a shady walk where more than a dozen varieties of hydrangea nod massive heads of bloom.
The Hulberts are both professional plantspeople, who live to grow things and who can’t stop themselves collecting. Craig’s current passions are for cuphea, hard-working little shrubs with cute but not showy flowers; his more than 15 elderberries; and oxalis, not the weedy ones, but the striking hybrids with odd flowers and fabulously marked foliage. Julie loves her perennials, and has developed a passion for salvia. There are now more than 120 varieties in the garden, including several rare treats.
The garden, created over the last decade and a half, and open since 2015, is in a constant state of assessment and alteration. Despite her horticultural credentials, Julie describes herself as an L-plater, always seeking to improve the garden and its plantings, inspired by visits to great English gardens, such as Bressingham, Hidcote, Great Dixter and the Royal Horticultural Society gardens.
The Hulberts do all the work in the garden themselves, and also propagate plants that are sold in the onsite nursery and at the Bowral markets. Julie does most of the propagating, Craig takes responsibility for structures and has built the stone walls, welded the metal supports that keep the lounging perennials in order and woven the brush fences from Lombardy poplar prunings and the cones and tripods from willow.
It’s impressively industrious as well as beautiful, and as in any lovely garden, there are plenty of good ideas to souvenir. Here’s just one – the Herberts use iron doormats where one garden leads into another. The iron frames become embedded so are only visible as you step on them. They prevent the green entrance to garden rooms becoming compacted, worn-bare eye-sores, and stop the spread of gravel from one part of the garden to another. Clever.
Perennial Hill is open Saturday and Sunday, 10am-4pm, until the end of March. $8 entry. 1 Nero St Mittagong.
It’s time to
Enjoy gum blossom
Remove spent gum blossom from flowering gums so that the tree doesn’t put all its energy into producing gumnuts.
Get more paws
Prune spent stems on kangaroo paw to just above the tiny flower buds noticeable halfway down the stem to encourage more flowers.
Two new weedkillers for organic gardeners: Yates Natures Way, based on clove oil, and Slasher from OCP, which also uses plant oils to kill other plants, including moss and algae. For weeds in paving, the no-spray organic solution is boiling water.
Watch for lily caterpillars
Check undersides of leaves on liliums and crinums for hoards of tiny caterpillars that will turn into big fat striped eating machines that decimate clumps overnight.