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Amateur Gardening published a guide on 8 November 2026 featuring seven plants garden designer Fi Boyle recommends for sloping gardens. The list ranges from ground-cover geranium and periwinkle to rosemary and sedum, with Boyle advising gardeners to match each plant to their site’s soil and aspect.
Amateur Gardening published a guide on 8 November 2026 in which garden designer Fi Boyle recommends seven plants for sloping gardens, from mat-forming ground covers to fragrant rosemary. The choices are intended to add colour and cover exposed soil, but Boyle says gardeners should first consider the site’s soil and aspect because plants that do not suit their conditions may need more care and fail to thrive.
Boyle, of Fi Boyle Garden Design, draws on experience designing a garden on a former quarry, according to the report. She recommends ground-cover plants as one way to disguise bare patches on sloping flower beds. The seven suggestions are Geranium macrorrhizum, Vinca minor, Ajuga reptans, ground-cover roses, Erigeron karvinskianus, trailing rosemary known as Rosmarinus ‘Prostratus’, and Sedum spurium.
The list covers a range of growing conditions rather than presenting one solution for every bank. Boyle describes Geranium macrorrhizum as tolerant of dry shade and a range of soils, with summer fuchsia-pink flowers and foliage that provides autumn interest. Evergreen Vinca minor, also called lesser periwinkle, can form a mat over bare ground and may flower from spring into September in suitable conditions; the report says sunnier positions tend to produce more flowers.
Other recommendations include Ajuga reptans for moist clay or loam, ground-cover roses for sunny to lightly shaded sites, and Mexican fleabane for a sunny, well-drained position. Boyle also suggests trailing rosemary for a sunny slope where its scent can be enjoyed beside a path, and Sedum spurium for a well-drained site and a summer carpet of red flowers. The article gives indicative heights and spreads, but notes that rose dimensions depend on variety.
Matching Plants to Sloping Sites
Planting a slope can leave patches of soil exposed, and the article’s recommendations focus on plants that spread to cover ground while adding flowers or foliage interest. That may help gardeners choose plants with more than one role: covering soil, extending seasonal colour, or providing fragrance. These are practical gardening suggestions, not a guarantee that every plant will establish equally well on every bank.
The guide’s central point is that local conditions matter. A plant suited to dry shade may not be the right choice for a sunny, moist slope, while a plant that needs well-drained soil may struggle where water collects. Choosing for the actual site can affect how much watering, pruning or other maintenance is needed. Several selections spread widely, so gardeners also need to account for their eventual size and proximity to other plants.
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Boyle’s Seven Plant Choices
The recommendations span different levels of sun and soil moisture. Geranium macrorrhizum is listed for sun or shade and all soil types, while Vinca minor is also listed for sun or partial shade but needs well-draining soil. Boyle says ajuga suits moist clay or loam and partial shade or full sun, and advises keeping it away from other mat-forming plants in the list because it can compete with them.
For a flowering option, ground-cover roses are suggested for full sun to light shade and well-drained soil; the report says they need some moisture to thrive and that mulch can help retain it. Mexican fleabane is recommended for full sun and well-drained soil, and can self-seed. Trailing rosemary is listed for full sun and chalk, loam or sand, while sedum is also listed for full sun and those soil types. Boyle’s growing tips include dividing ajuga every few years, taking rosemary cuttings in summer, and dividing sedum in spring.
The article is by Teresa Conway and presents Boyle’s selections as favourites for a range of garden situations. Its advice is based on the designer’s recommendations; the source does not report a comparative trial of the seven plants.
“What works depends so much on the aspect and soil. The key is to match the plant to its surroundings, otherwise it won’t thrive and will need a lot of care.”
— Fi Boyle, Fi Boyle Garden Design, as quoted by Amateur Gardening
Site Conditions Still Matter
The report does not specify how the recommendations perform on slopes of different steepness, in different climates, or under varying rainfall. It also does not provide a single planting plan or spacing guide for combining the seven choices. The sizes given are general ranges, and the spread of a plant in a particular garden will depend on its conditions and variety.
Some selections may spread substantially: the article lists potential spreads of up to 1.5 metres for periwinkle and up to a metre for several others. It cautions that ajuga can compete with other mat-forming plants. Gardeners should check the requirements and likely mature spread of a particular plant before planting, especially where they want to keep different ground covers in separate areas.
Check the Bank Before Planting
The article gives no subsequent announcement or scheduled follow-up. For gardeners using the recommendations, the next step is to assess the slope’s light, soil type and drainage, then select plants suited to those conditions. The growing tips in the guide offer ways to maintain or propagate some choices, including deadheading geranium, watering ajuga in drought, mulching roses to retain moisture, and dividing sedum in spring.
Because the list includes plants that spread, gardeners can also plan where each will grow and leave room for its expected size. Boyle’s overall advice is to start with the conditions on the bank rather than choosing by flower colour alone; the source does not offer a one-size-fits-all design or claim that any planting will remove the need for maintenance.
Key Questions
Which plants does Fi Boyle recommend for sloping gardens?
Boyle’s list includes Geranium macrorrhizum, lesser periwinkle, ajuga, ground-cover roses, Mexican fleabane, trailing rosemary and Sedum spurium.
What should gardeners check before choosing plants?
Boyle says to consider the slope’s soil and aspect. The recommendations differ in their needs for sun, shade, moisture and drainage.
Which choices can cover bare soil?
The report describes Geranium macrorrhizum, periwinkle, ajuga and sedum as mat-forming or spreading choices that can cover ground. Their suitability depends on the site and their spread should be considered.
Do all seven plants suit the same conditions?
No. For example, Boyle lists ajuga for moist clay or loam, while rosemary and sedum are listed for sunny sites with chalk, loam or sandy soil. The article advises matching plants to local conditions.
Source: amateurgardening.com
