The Irish Gardener · Planting plans for Irish gardens
Plants and planting plans for clay soil in Ireland
Clay soil is not a reason to give up on your garden. It is a reason to choose the plants carefully.
I design planting plans around your garden’s soil, light and available space, so the plants have the conditions they need and the whole scheme works together.
Peter Dowdall
Horticulturist, planting designer and broadcaster
I personally create planting plans and garden designs for clients throughout Ireland, including gardens with heavy clay and seasonally wet ground.
Clay can be fertile, moisture-retentive soil capable of growing a wide range of plants. The important thing is how it behaves in your garden. A bed that drains after rain offers different possibilities from ground that stays saturated for weeks.
This page explains how I approach planting plans for clay. For practical plant lists, including shrubs, perennials, damp shade and ground that is wet in winter but dry in summer, see plants for wet soil in Ireland .
If the soil itself needs attention, I cover that separately in why clay soil needs a different approach .
What you receive
A planting plan you can put into practice
Plant positions and spacing
An illustrated plan showing where the plants go, with space allowed for their development.
A full plant list
Plant names and quantities, selected for the conditions and the planting scheme we agree.
Concept images
Illustrations to help you picture the proposed planting. These show the design intention rather than a guaranteed finished appearance.
Optional plant supply
Plant sourcing and delivery can be arranged as part of the agreed service, with availability and costs confirmed in your proposal.
Tell me what you would like to change and I will explain the appropriate service, what is included, the likely cost and the expected timing before you decide to proceed.
What to plant
Choosing plants for clay soil
I start with the soil, but I also look at light, exposure, shelter and what happens through the year. Clay alone does not tell me whether a particular plant will thrive. Nor does a plant’s tolerance of heavy soil mean it can survive permanent waterlogging.
Plants worth considering
- Shrubs for structure: suitable dogwoods and viburnums can bring flowers, foliage and winter interest. Exact species and drainage conditions matter. See dogwoods for winter colour .
- Perennials for moisture-retentive beds: astilbes, daylilies and suitable bistorts offer different forms and flowering seasons. Astilbes need dependable summer moisture.
- Hardy geraniums: selected species and cultivars can knit a border together. Choose for the light and drainage of the position.
- Roses: many grow well in fertile clay where excess water drains away. They are not a solution for permanently saturated ground.
- Grasses: selected miscanthus and calamagrostis can add movement and upright structure where the soil and light suit them.
- Boundary planting: hawthorn, blackthorn or hazel may suit heavier ground, depending on the site and the space available. Young hedges still need establishment care.
Plants that need closer thought
- Lavender, cistus and rosemary: these favour sunny, freely draining conditions and often struggle in wet, heavy ground.
- Alpines: many need sharper drainage than a wet clay border provides.
- Bulbs: tolerance varies. Some suit moisture-retentive soil, while others rot if left saturated. See soil preparation for bulbs .
- Plants labelled “well-drained soil”: check whether your clay drains adequately. Clay can be well structured and workable; it is not automatically waterlogged.
- Plants chosen only for foliage colour: silver leaves alone do not tell you everything about a plant’s soil requirements. Check the individual plant.
From plant choices to a garden
What I consider when planning a clay-soil border
Where the water sits
A low corner may stay wet while a raised edge drains more freely. I consider those differences rather than treating the whole garden as one planting condition.
What happens in summer
Some clay beds remain moist. Others dry hard. Plants need to suit the conditions they will experience across the year.
Structure and seasonal interest
Shrubs, trees and perennials have different jobs. Their heights, shapes and flowering seasons should work together, including what you see from the house in winter.
Space and maintenance
Mature spread, access for weeding, pruning and the time you have all influence the choices. A plant that survives is only part of a successful scheme.
Planting design cannot replace drainage assessment where there is serious flooding or persistent saturation. Where wet ground is a natural feature of the site, suitable planting may be more practical than trying to change it.
Not sure what you have? Start with identifying your soil type . For soil improvement, use the separate clay-soil guide .
The process
How working with me works
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1. Tell me about your garden
Use the garden enquiry page to share your location and what you would like to change. You do not need a complete brief before getting in touch.
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2. We agree the right approach
I review your enquiry and explain the next step and costs. Depending on the project, I may need photographs, measurements, a simple sketch and a conversation about your garden.
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3. I design your planting
I personally select and arrange the plants around the conditions, your preferences and the agreed brief. The scheme considers the whole border, rather than individual plants in isolation.
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4. You receive your plan
You receive the agreed planting documents, with plant supply available if included in your proposal. The delivery schedule is confirmed for your project.
For existing beds, read about Planting by Numbers . For changes involving the wider garden, see my garden design service .
Planting designed personally by Peter Dowdall
My work combines practical horticulture and planting design with over 30 years of explaining gardening through broadcasting, writing and speaking.
I present gardening on RTÉ, contribute to national and local radio, and wrote a weekly gardening column for the Irish Examiner for 13 years.
When I plan a clay-soil garden, the growing conditions shape the choices. Your location provides useful context, but photographs, your observations and the details we gather tell me much more about the ground itself.
See examples in my garden design portfolio , or read more about me .
Planning a clay-soil garden?
Let’s choose planting that suits your ground
You may have one border to improve or a whole garden to plan. Tell me what you would like to change and I will recommend the appropriate next step, explain what is involved and give you an idea of the cost.
Planting plans and garden design are available remotely throughout Ireland, with on-site consultations also available in Cork.
Related planting advice
Looking for advice on another gardening question? Browse the Garden Q&A .