Drought-Tolerant Cottage Garden Plants
Summary of BHHS presentation — 2 November 2026
Introduction
This presentation was delivered by Steve Edney, an experienced horticulturist who, together with Louise Dowle, owns and runs No Name Nursery, a specialist plant nursery in Kent.
Steve and Louise have extensive experience growing and trialling unusual perennials, particularly plants suited to challenging conditions. Their work includes involvement in RHS plant trials and the development of innovative planting combinations.
In this talk, Steve explored how traditional English cottage gardens can adapt to increasingly hot, dry summers without losing their characteristic colour, abundance and diversity.
Drawing on practical experience from his own gardens, nursery and plant trials, he highlighted drought-resilient species and cultivars, explained their particular strengths and limitations, and shared techniques for creating attractive, sustainable borders requiring relatively little maintenance.
1. Main message
Steve's central argument is that climate change does not have to mean the end of the traditional English cottage garden.
Rather than replacing familiar cottage garden plants with Mediterranean plants, gravel and succulents, gardeners should select varieties capable of coping with increasingly dry summers while surviving Britain's wet winters.
Steve prefers the term "plants for the summer-dry garden" rather than simply "drought-tolerant plants".
This distinction matters because plants must cope with both extremes: prolonged summer drought and winter moisture.
2. Key horticultural principles
The presentation emphasised several practical techniques.
• Plant selection is critical. Choosing the right species and cultivar is more important than simply choosing plants labelled drought tolerant.
• Plant densely. Aim for complete ground coverage by mid-May, reducing exposed soil and opportunities for weeds.
• Reduce maintenance. Steve described a 100 m × 6 m herbaceous border (600 m²) maintained with only eight working days per year, largely through careful plant selection and spacing.
• Consider root systems. Deep taproots, fleshy roots and certain leaf characteristics can help plants cope with drought.
• Consider winter conditions. Some Mediterranean plants tolerate summer drought but struggle with wet British winters.
• Use vertical planting. Upright plants allow other species to grow beneath them, providing succession without excessive competition.
• Reconsider sun and shade. Some traditionally sun-loving plants may perform better with partial shade as summers become hotter.
3. Recommended plants
The following are some of the more significant plants Steve discussed. Botanical names have been standardised where the intended identification is reasonably clear; several names in the transcript are distorted by transcription errors.
Plant Steve's observations
Baptisia australis Excellent alternative to lupins. Drought tolerant, long-lived and less susceptible to the problems affecting lupins.
Geranium 'Ann Thomson' Flowers from May to November. Excellent for borders and large containers.
Geranium 'Patricia' Another strongly recommended hardy geranium.
Geranium renardii Woolly foliage, compact habit and excellent for hot, dry border edges.
Nepeta 'Purple Haze' Low-growing, spreading ground cover, approximately 20 cm tall in flower.
Nepeta 'Romany Dusk' Upright habit, approximately 1.5 m tall, allowing other plants to grow around it.
Salvia 'Crystal Blue' Compact, approximately 30 × 30 cm, with a long flowering season and repeat flowering after cutting back.
Lychnis coronaria Extremely tolerant of hot, dry conditions. Can self-seed freely.
Erodium manescavii Particularly suitable for exceptionally dry positions, including rain shadows beside buildings.
Eryngium species Many have deep taproots and good drought tolerance, although not all species are equally suitable.
Hemerocallis 'Canada Goose' Broad foliage appears better able to withstand summer drought than narrow-leaved varieties.
Stipa gigantea 'Gold Fontaene' Praised as an attractive ornamental grass cultivar.
Phlomis 'Edward Bowles' Tough, semi-woody plant that can be cut back hard when necessary.
Crambe cordifolia Architectural plant producing clouds of flowers above surrounding planting.
Verbena officinalis var. grandiflora 'Bampton' Long flowering season, potentially into late autumn, but can self-seed extensively.
Romneya coulteri Californian tree poppy. Attractive, drought tolerant, but can spread aggressively through underground growth.
4. Particularly interesting observations
Baptisia instead of lupins
This was one of Steve's strongest recommendations.
Steve described an RHS trial comparing the performance of Baptisia and lupins.
According to the presentation, the lupin trial was abandoned after substantial plant losses, while Baptisia performed considerably better.
Baptisia takes a few years to establish but can then remain productive for decades.
Practical implication: An excellent candidate for a traditional cottage-style border where lupins struggle with drought, mildew or aphids.
Dahlias can be surprisingly drought tolerant
Steve described growing bronze-leaved dahlias in the ground for five years without lifting them.
They were not watered during summer, yet continued flowering.
Winter protection involved woodchip, followed by spring mulching.
Steve suggested that some simpler dahlia forms are naturally better adapted to drought than highly bred, large-flowered varieties.
Not all Eryngiums are drought tolerant
An important distinction was made between different types of sea holly.
Many northern-hemisphere species have substantial taproots, making them drought tolerant.
However, some South American species have fibrous root systems and naturally grow in damp environments.
The example given was Eryngium pandanifolium, which tolerated heat but performed poorly in very dry soil.
Practical implication: Heat tolerance and drought tolerance are not necessarily the same thing.
Ground coverage reduces maintenance
Steve's 600 m² border was a particularly useful example of planting design.
By selecting appropriate cultivars and planting at densities that allow the foliage to close over the soil by May, the garden substantially reduces weed establishment and maintenance.
The emphasis was on designing the planting correctly rather than continually intervening.
5. Plants requiring some caution
Steve also identified limitations.
Plant or group Potential problem
Mediterranean plants and succulents May suffer in wet British winters
Some Thalictrum species Struggled in Steve's dry conditions
Romneya coulteri Can spread beyond its intended position
Verbena 'Bampton' Can self-seed excessively
Some Eryngium species Not necessarily drought tolerant
Large decorative dahlias May require more water and nutrients
Traditional moisture-loving Lobelia Often unsuitable for dry gardens.
6. Overall takeaway
The presentation's most important point was that successful gardening in a changing climate depends on intelligent plant selection and planting design, rather than abandoning the traditional cottage garden style.
Steve advocated creating colourful, densely planted, wildlife-friendly borders that tolerate prolonged summer drought without requiring constant watering.
His experience demonstrates that careful cultivar selection, appropriate planting densities and an understanding of individual plants' characteristics can produce attractive, resilient gardens with substantially reduced maintenance requirements.
The traditional English cottage garden can therefore continue to thrive, provided gardeners adapt their plant choices and techniques to changing climatic conditions.