Late August in the naturalistic garden
August can be a tricky month in the garden. Early summer flowers are fading, and autumn hasn’t yet begun to show its hand. But in a naturalistic garden, this is often when the borders really come alive.
Grasses begin to move into their prime, seedheads catch the light, and late-flowering perennials bring a fresh burst of energy just as the season feels like it should be slowing down.
Watch the video and read on for more details:
Key plants in the naturalistic garden for late summer
Walking through my garden this week, I’m struck by the sheer abundance. Plants weave together, each one supporting the next, and the whole border has a looseness that feels both vibrant and relaxed. Some stars really stand out right now:
Sanguisorba officinalis ‘Red Thunder’ sends up airy wands dotted with deep crimson buttons. They dance in the breeze, catching the light and floating above their companions.
Helianthus ‘Lemon Queen’ is glowing, its soft yellow flowers standing tall and cheerful, drawing in pollinators from every direction.
Angelica gigas is magnetic – its rich, dark umbels are buzzing with wasps, bees, and hoverflies, reminding me that August is as much about feeding wildlife as it is about colour.
Eupatorium ‘Riesenschirm’ towers gracefully, its soft mauve plumes hazy with butterflies. It gives the garden height and presence, while its cousin ‘Snowball’ offers a lighter, frothy effect.
Cynara cardunculus, with its bold, architectural leaves and sculptural flower heads, is a dramatic foil to the looser textures around it.
Threading through all of this are quieter notes: the long flowering Calamintha nepeta, still producing clouds of tiny white blossoms that hum with bees; the jewel-blue Ceratostigma willmottianum, just beginning to open; and the elegant Thalictrum rochebrunianum, sending up delicate clouds of lilac against the late summer sun.
Together, these plants create a tapestry that feels alive and ever-changing. The beauty of a naturalistic garden is that no single flower dominates for long – instead, you get shifting rhythms, waves of interest, and a sense of harmony between plants and the insects they support.
As the days shorten and the light softens, the garden begins its slow transition toward autumn. But for now, in late August, it’s brimming with colour, energy, and life – a reminder that this is a season of abundance, not decline.
Have you got any favourites or recommendations?
I’d love to know what caught your eye – were there any plants in the video that stood out for you? Do you have a late-summer favourite that always performs well in your garden?
I’m always on the lookout for fresh ideas, so if you’ve got any recommendations of plants that are shining for you right now, please share them in the comments.
Happy growing,
Joe

Joe Vary Dip. Hort (Wisley), MCIHort, CMTGG
I'm a gardener, educator, consultant, and planting designer. Learn with me 1-to-1, or join my mentoring group and community.