Low-Pollen Plants for Hay Fever: A South East London Garden Guide

Hay fever affects somewhere between one in five and one in four people in the UK depending on which study you read, and if you live in South East London your own garden is probably making it worse. Plane trees on every street, a grass lawn flowering from May to July, and the urban heat that stretches the pollen season longer here than it runs in Kent. Enclosed terraced gardens trap the lot.

You do not have to concrete over the garden to fix this. The right plants and a few layout changes cut the pollen load enough that most sufferers can actually sit outside in June.

We have been redesigning gardens across Eltham, Blackheath, Lewisham, Greenwich and the surrounding SE postcodes since 2016, and allergy-driven redesigns come up more often every year. Here is what actually works.

The quick version

• The principle: choose insect-pollinated plants (heavy, sticky pollen that stays on the flower) over wind-pollinated plants (light, airborne pollen that gets up your nose)
• Best choices: hydrangeas, roses, camellias, hardy geraniums, begonias, lavender, clematis, fuchsia, heuchera
• Worst offenders: ryegrass lawns, birch, privet, Leylandii, male yew, ornamental grasses
• Biggest single change: deal with the lawn. Around 95% of UK hay fever sufferers react to grass pollen
• Best time to be in the garden: late morning to mid afternoon. Pollen peaks early morning and again in the evening
• Want help? Book a free on-site survey or call 07760800457 (Mon to Sat, 9am to 6pm)

Why Hay Fever Is Worse in South East London Gardens

This is not the same problem as living in the countryside. Four things stack up here.

London plane trees. They line the streets across Greenwich, Lewisham, Blackheath and most of SE London. In late spring they shed fine irritant hairs along with pollen. You cannot do anything about street trees, but you can avoid adding more wind-pollinating trees inside your own boundary.

The urban heat island. Built-up areas hold heat longer than open countryside, which stretches the pollen season at both ends. Hazel and alder can be in the air from February, birch peaks through April and May, and grass pollen can hang on into August. The Met Office runs its pollen forecast from mid-March to mid-September, and London routinely sits at the early end of every window. The Met Office pollen calendar gives the national windows; London tends to run wider than those.

Trapped pollen. Terraced streets and enclosed gardens are the norm across SE London. Pollen does not blow through. It settles on patios and furniture, collects in corners and gets stirred back up on warm days.

Pollution. Nitrogen dioxide and other traffic pollutants damage pollen grains and make them more allergenic. Urban pollen irritates more than rural pollen at the same count. It is one reason people who never had hay fever growing up develop it after moving to London.

None of this means you cannot have a garden. It means plant choice matters more here than it would in Sevenoaks.

The One Rule: Insect-Pollinated vs Wind-Pollinated

This is the whole thing. Get this and every plant decision after it becomes obvious.

There is one useful side effect here. Insect-pollinated planting is also the planting that supports bees and butterflies, so an allergy-friendly garden and a pollinator-friendly garden are largely the same garden.

Best Low-Pollen Plants for South East London Gardens

These all cope with what SE London actually throws at plants: London clay, partial shade from neighbouring buildings and extensions, mild wet winters.

Find the light level you are working with, then read the notes on that plant below.

Flowering plants for borders and beds

Lavender. Insect-pollinated and generally well tolerated. Needs the sunniest spot you have and sharp drainage, so on heavy London clay put it in a raised bed or a container rather than fighting the soil.

Fuchsia. Thrives in partial shade, insect-pollinated, no meaningful airborne pollen. One of the best performers in a north-facing SE London garden.

Heuchera (coral bells). Low-growing foliage plant with tiny insect-pollinated flowers. Enormous range of leaf colours, and it works as ground cover, which suppresses weeds. Fewer weeds means fewer weed flowers, which means less pollen. Weed control is an underrated part of an allergy garden.

Clematis. Insect-pollinated climber, ideal for walls, fences and trellis where a small SE London garden has no floor space left to give.

Shrubs and hedging

Ilex crenata or Euonymus japonicus instead of box. Box (Buxus) is often recommended in allergy articles, and it is low pollen, but we will not specify it in SE London any more. Box blight and box tree caterpillar have hit London and the South East harder than anywhere in the country, and the RHS now maintains a dedicated box alternatives trial because of it. Japanese holly gives you the same clipped look without the near-certainty of defoliation.

A warning on yew. Yew is regularly listed as a low-allergen hedge. That advice is only true for female plants. Male yew scores 10 out of 10 on the Ogren Plant Allergy Scale, the worst possible rating, while female yew scores 1. Hedging yew sold in UK garden centres is not sex-selected, so you are effectively tossing a coin. Avoid it in an allergy garden unless a nursery can guarantee female stock in writing.

Trees, if you have the space

Magnolia. Insect-pollinated, huge showy flowers, handles London clay well.

Apple, pear and cherry. All insect-pollinated. Blossom stays on the flower, and you get fruit out of it. Good for medium and larger gardens.

Japanese maple (Acer palmatum). Minimal pollen, gives structure and serious autumn colour, and does well in the sheltered conditions an enclosed SE London garden provides.

Not sure what you have got, let alone what to replace?

Send us a few photos through our contact page and tell us who uses the garden and what triggers the worst symptoms. We will tell you honestly whether a planting swap will fix it or whether you need to look at the lawn. Photo-based quotes come back within 24 hours. For larger jobs, a free on-site survey with a written quote within 3 business days. Call 07760800457 (Mon to Sat, 9am to 6pm)

Plants to Avoid or Remove

These are the common garden plants doing the most damage to hay fever sufferers. Peak months are for London, which typically runs a week or two ahead of the national average.

Four of those need a bit more than a table row.

Privet is the one people miss. If you have a mature privet hedge and bad June symptoms, that hedge is very likely a bigger contributor than anything in your borders.

Replacing a conifer boundary? Fencing plus climbers is usually the better answer in a small SE London garden, because a replacement hedge takes years to screen and eats width you do not have.

Ornamental grasses. We have written about ornamental grasses for accent planting and we stand by that post for most gardens. But if anyone in the house has hay fever, skip them, or cut the flower heads off before they open.

Dahlias are salvageable. Double-flowered forms hold their pollen in tightly and are the least problematic of the Asteraceae if you do not want to lose them.

Buddleia. Worth being accurate about this one. Buddleia is insect-pollinated and is not a major hay fever plant. But some people do react to it, and it is one of the most common self-seeding invasives in London. If you react to yours, take it out. If you do not, keep it for the butterflies.

What to Do About the Lawn

For most sufferers the lawn is the elephant in the room. It looks completely harmless and it is the single largest pollen source in the garden. Grass pollen is the main trigger during the season, affecting around 95% of hay fever sufferers according to the Royal Meteorological Society.

Four options, cheapest first.

Option 1: Keep it, but mow aggressively

Grass only pollinates once it gets long enough to flower. Cut it before that happens and you cut most of the pollen. That means weekly during the growing season, ideally twice weekly in May and June. This does not eliminate the problem but it makes a real difference, and it is free if you already own a mower.

Cost if you do not: our lawn mowing and maintenance runs £80 for the first hour, £60 per hour after that, with no minimum charge. A small SE London lawn is usually inside the first hour. Fortnightly is not enough during peak season, so book weekly from May to July.

Option 2: Swap to a low-allergen grass mix

Not all grass is equal. Fine fescues produce far less pollen than the perennial ryegrass in standard UK turf. You still mow, but the pollen output drops noticeably.

Cost: £15 to £28 per m² including turf, topsoil, ground prep and laying. A small lawn up to 30m² comes in around £450 to £840. Full numbers in our turfing cost guide for South East London.

Option 3: Replace with artificial grass

This removes grass pollen from the equation entirely. No mowing, no flowering, no pollen, and nothing to bring into the house on the dog. For a severe sufferer it is the single most effective change available.

Cost: £60 to £90 per m² installed, including excavation, sub-base, membrane, grass and labour. A small lawn up to 30m² is £1,800 to £2,700. Before you commit, read our honest pros and cons of natural vs artificial grass and our artificial grass maintenance guide, because it is not maintenance-free, just mowing-free.

Option 4: Lose the lawn entirely

Gravel, paving, raised beds and ground-cover planting can replace turf completely and give you a genuinely low-maintenance, low-pollen garden. Heuchera, ajuga and creeping thyme all work as walkable-ish ground cover.

Cost: this is a garden landscaping and design project. Small refresh with new borders, gravel paths and planting typically £1,200 to £3,500. See our low-maintenance garden design guide and the full price list for everything else.

Turfing Installation by Urban Gardeners

Layout Changes That Cut Pollen Exposure

Plant choice is half of it. How you arrange the garden is the other half.

Use a hedge as a pollen filter. A dense low-allergen hedge on the windward boundary traps airborne pollen coming in from neighbouring gardens and street trees before it reaches your seating area. Female holly and Ilex crenata both do this well. Keep it properly trimmed so it stays dense at the base, which is where a leggy hedge stops working as a filter.

Mulch the borders. Bare soil grows weeds, weeds flower, flowers make pollen. A 5cm layer of bark or gravel suppresses weed growth, holds moisture, and removes one whole category of allergen. Cheapest high-impact job on this list.

Move the seating away from the problem. If you cannot remove every wind-pollinated plant, at least put distance between it and where you sit. In most SE London gardens the patio is against the house and the planting is at the far end, which already helps.

Wash the hard surfaces. Pollen settles on patios, decking and furniture and gets kicked back into the air every time you walk across. A sweep once a week helps, and a proper patio and decking clean at the start of the season strips out the built-up layer. We charge £4/m², minimum £140, and use no harsh chemicals, which matters if the reason you are cleaning is that somebody in the house has sensitive airways.

When to Be in the Garden (Free, and Nobody Mentions It)

Pollen counts are not flat across the day. They typically peak in the early morning, roughly 5am to 10am, as warming air lifts pollen off the plants, dip around midday and rise again in the early evening as the air cools and pollen sinks back down.

So the practical advice is: garden and sit outside between late morning and mid afternoon. Avoid the early evening pint in the garden in June, which is exactly when most people want it. Check the Met Office pollen forecast before planning a day outside, and see the NHS hay fever guidance for symptom management, which is a doctor's job, not a gardener's.

If we are cutting your grass, tell us if hay fever is an issue and we will schedule the visit for the middle of the day and bag every clipping rather than leaving them on the lawn.

Pets and Children

If you are redesigning for allergies and you have either, two extra points.

Pets carry pollen indoors on their coat after every trip outside, so reducing pollen at ground level, which mostly means the lawn, cuts what ends up on your sofa. Worth factoring into the artificial grass decision.

Children. Avoid anything toxic if eaten: foxglove, laburnum, yew berries, lily of the valley. Everything recommended in this guide is non-toxic, but check any additions before planting if children use the garden unsupervised. Our guide to pet-friendly plants safe for dogs and cats covers a lot of the same ground.

What an Allergy-Friendly Garden Redesign Costs in 2026

Based on our actual SE London rates, not national averages.

All ranges include labour and materials. Final pricing depends on garden size, ground conditions, access and material choices. Full breakdown on our prices page.

Frequently Asked Questions

Get an Honest Answer About Your Garden

Send us a few photos through the contact page with a note on who uses the garden and what makes the symptoms worst. We will tell you straight whether swapping a few plants will do it or whether the lawn is the real culprit, and we will not sell you a full redesign you do not need.

Family-run since 2014, based in Eltham SE9 since 2016, 111 Google reviews at 4.5+, fully insured, holding a Gardening and Landscape Design Business Diploma and Certificate.

For larger projects: free on-site survey, written quote within 3 business days.

Call 07760800457 (Mon to Sat, 9am to 6pm) or send your photos here. We reply within 24 hours.

We cover all South East London postcodes including Lewisham, Greenwich, Eltham, Blackheath, Catford, Sidcup and all surrounding Bromley, Bexley and Dartford postcodes. See our portfolio for before and after projects.