How to Plant a Hedge: A Step-by-Step Guide

When should you plant a hedge?

Bare-root hedging — plants sold with no soil around the roots, typically available from nurseries through the dormant season — is best planted while it's fully dormant, roughly late autumn through early spring depending on your climate. Avoid planting into frozen ground or soil that's completely waterlogged after snowmelt or heavy rain. It's better to wait a week or two than to force roots into cold, saturated clay where they can suffocate before they've even settled in.

Container-grown plants already have an established root system growing in soil, so they tolerate a much longer planting window — in practice, anytime from when the ground thaws in spring through autumn before hard frost sets in. Avoid planting during a stretch of intense heat and drought, though, since new roots dry out fast before they've had a chance to grip the surrounding soil.

In colder climates, spring planting is often the safer bet for evergreens that sit near the edge of what your zone can handle. A plant set out in autumn that then faces an unusually harsh first winter before its roots have established risks more damage than one given a full growing season to get going first.

Also avoid scheduling planting for a week you know will be hectic. Hedging left a little longer in its pot or with roots wrapped in damp sacking usually fares better than plants rushed into the ground and then forgotten during the critical first few days without water.

Bare-root, container-grown or root-balled — which should you buy?

Hedging plants are typically sold three ways, and the choice affects price, planting season, and how quickly the hedge looks established.

Bare-root plants are the cheapest option, sold leafless with no soil around the roots during the dormant season, usually late autumn through early spring. They often establish surprisingly fast because the roots make direct contact with the new soil right at planting, but they need to go in the ground soon after purchase and won't tolerate drying out or sitting around for weeks.

Container-grown plants cost more per plant but can be planted across a much longer stretch of the year since the root system is already established in soil. They're a good option if you've missed the narrow bare-root window, want to see exactly what you're buying before it goes in the ground, or simply need to plant on your own schedule rather than nature's.

Root-balled plants — where a large clump of soil and roots is dug up and wrapped in fabric or a basket — give near-instant visual impact because the plants are already sizeable at purchase. The price is substantially higher, often five to ten times more per plant than the same species bought bare-root, and they're mostly worth it when you need working privacy fast, or you're replacing a few dead plants in an already-established hedge without new gaps standing out in size for years.

Since most common hedge plants grow reasonably fast regardless of how they're bought, paying extra for root-balled stock is rarely worth it unless you're in a hurry. The gap between a small, cheap bare-root plant and a large root-balled one usually closes within two or three growing seasons.

Check the plants themselves before you pay, whatever type you choose. Bare-root plants should have firm, pale roots with no grey, dried-out surface or musty smell. Container-grown plants should have an even, firm root ball when you gently check inside the pot — if the whole soil mass falls away from the roots in the shop, the plant has likely sat too long in that container and developed a circling, matted root system that can restrict growth for years afterward.

Preparing the soil and planting site

Before you even buy plants, it pays to prepare the site. Strip grass, weeds and roots from a strip at least 40–50 cm (16–20 in) wide along the whole hedge line. Competition for water and nutrients from nearby turf is one of the most common and most underrated reasons a new hedge grows sluggishly in its first couple of years.

Beyond the plants themselves, you'll typically need a spade — ideally with a flat, straight blade for clean trench walls — compost or well-rotted manure, string and two stakes to keep the row straight, a watering can or hose, and a wheelbarrow for moving soil and compost. Keep a pair of secateurs on hand for trimming damaged roots or broken shoots.

Dig one continuous trench rather than individual planting holes. Hedge roots spread mainly sideways, and a trench at least twice as wide as the root system gives roots loose, workable soil to grow into from day one. A hedge planted into individual narrow holes surrounded by hard, unimproved soil tends to grow noticeably slower in its first seasons, no matter how fast-growing the species is on paper.

Dig the trench roughly one spade's depth, mix the excavated soil with compost or well-rotted manure, and return some of that mixture to the bottom of the trench before setting plants in. Work compost through the entire trench, not just around each individual plant, so roots find improved soil later on when they spread sideways toward their neighbours.

Test drainage if you're unsure about the soil. Dig a hole, fill it with water, and see how fast it drains away. If it takes more than a few hours to disappear, you've got poor drainage, and rot-prone species like arborvitae are at real risk there. Work extra sand or grit into the bottom and sides of the trench, raise the planting bed slightly, or choose a species that tolerates damp soil better, such as hornbeam.

Good to know. Soak bare-root plants in a bucket of water for one to two hours before planting, or overnight if the roots look especially dry when you unpack them. Dried-out roots are one of the most common reasons bare-root hedging fails within the first few weeks.

Mark the row with string stretched between two stakes before you dig or plant. It takes only a few extra minutes but makes the difference between a straight, professional-looking hedge line and one that wanders wherever the spade happened to land that day.

How to plant a hedge, step by step

1. Soak bare-root plants. Leave the roots in a bucket of water for one to two hours right before planting so they're fully rehydrated. Water container-grown plants thoroughly in their pots the same day, ideally an hour before you take them out.
2. Finish digging the trench. The width should be at least double the size of the root system, with a depth roughly matching one spade blade, or however deep the plant grew at the nursery — look for the lighter mark on the stem where soil previously reached.
3. Work in compost. Mix compost or well-rotted manure into the excavated soil, roughly one part compost to three or four parts soil, and lay a layer in the base of the trench.
4. Stretch a string line. Tie it between two stakes along the hedge's intended line so you have a clear reference to plant against, even if the trench itself is already straight.
5. Set plants at the right depth and spacing. The root collar, where stem meets root, should sit level with the finished soil surface — not deeper. Use the spacing for your hedge type from the table below, and spread bare-root roots out rather than folding them into a cramped bundle.
6. Backfill and firm gently. Spread soil evenly around the roots in stages, firming lightly with your hand or foot between layers to remove large air pockets, but avoid compacting the soil hard.
7. Water thoroughly. Give each plant a generous soak right after planting, even if the soil already feels damp. The water helps soil settle tightly around the roots and removes air pockets your hands missed.
8. Apply mulch. A 5–7 cm (2–3 in) layer of bark, compost or grass clippings around the base holds in moisture and keeps weeds down. Keep it away from direct contact with the stems, since mulch piled against them raises the risk of rot at the base.

How far apart should hedge plants be spaced?

Spacing determines both how quickly a hedge fills in and how much it costs overall, since more plants per metre means more plants to buy. Spacing too tight wastes money and forces plants to compete for room before they've even established, while spacing too wide simply makes the hedge take longer to close up, regardless of how fast the species grows.

It can be tempting to plant a double, staggered row for faster density, but it's rarely worth it. The cost nearly doubles while density is rarely twice as good, since the plants still compete for the same limited soil and water. A single row at the right spacing with adequate watering usually delivers just as good a result within a few seasons. If you want to know which species close up fastest regardless of spacing, our guide to fast-growing hedges covers exactly that.

If you're also planning a border in front of or behind the new hedge, it's worth reading our guide on planning a flower bed before you start digging, so the hedge and the border are laid out together rather than one after the other.

Watering, mulching and first-year care

The first year usually decides whether a hedge establishes well or struggles for several seasons afterward. Watering is the single most important factor, especially the first two to three months after planting and right through the first summer.

Water deeply and infrequently rather than lightly and often. A thorough soak once or twice a week in dry weather pushes water down to where roots actually grow, while a light daily sprinkle only dampens the top couple of centimetres and encourages roots to stay near the surface instead of growing down and out. Sandy soil dries out faster than clay and may need more frequent watering, while heavy clay holds moisture longer but risks waterlogging if you overdo it.

Keep the ground clear of grass and weeds in a strip at least 40–50 cm (16–20 in) wide around the hedge for the first year or two. Competition for water and nutrients from nearby turf roots is a badly underrated reason new hedges grow slowly. A layer of mulch keeps down both moisture loss and weeds at the same time, and can be topped up as it breaks down over the season. If you'd rather replace that bare mulch strip with something green later on without competing too hard for light and water, our guide to ground cover plants covers which species work well right at the base of a hedge.

Hold off on heavy feeding until the spring after planting. Fresh, unestablished roots can be damaged by too much fertiliser salt, and a newly planted hedge putting its energy into building roots usually does better with steady moisture than extra nutrients in year one. The exception is when a soil test shows a clear deficiency in a specific nutrient, in which case a light, targeted feed earlier can be justified.

In year two, you can gradually ease off the extra watering and weed patrol as the root system spreads and plants cope better on their own. Still, keep an eye on the hedge during long dry spells even in years two and three — an established hedge handles drought better than a freshly planted one, but it's still younger and more vulnerable than a hedge that's been in the ground for a decade.

Common mistake. Never plant too deep. The root collar should sit level with the finished soil surface, not buried under several centimetres of soil. A hedge plant set too deep often struggles to breathe through the base of the stem, which raises the risk of rot and can keep the plant from ever really getting going, even with otherwise perfect watering and soil.

Should you prune a hedge right after planting?

The answer depends on the species. Deciduous, bare-root hedging like privet, hornbeam and serviceberry often benefits from being cut back by roughly a third right after planting. That sounds drastic, but it forces the plant to send up new shoots lower down from the base instead of simply extending the shoots it already has, which builds a denser hedge from the ground up rather than a tall, leggy one with bare lower sections a few years later.

Evergreen conifers like arborvitae and yew shouldn't normally be cut back hard right after planting. Here it's enough to lightly tip especially long, uneven shoots to even out the shape and encourage side growth. A hard cut into old, leafless wood can mean that branch never puts out new growth again.

Common mistake. Never cut into old, leafless wood on arborvitae or other conifers, either right after planting or later on. Unlike most deciduous hedges, many conifers won't resprout from bare, old wood, and the branch stays permanently thin or bare.

The real shaping and clipping comes later, over the following seasons, with the goal of building a wider base and a narrower top so light reaches all the way down. That's a separate topic in its own right — this is just about the first, careful intervention right after planting.

Planting a hedge by hardiness zone

Hardiness zones are a rough guide to when and how safely you can plant, not a guarantee. A sheltered spot near a house wall can tolerate earlier autumn planting of a species that's otherwise borderline, while an open, windy site can call for extra caution even in a milder zone.

If you're unsure which zone your site really falls into, or an especially exposed spot means you should plan for a harsher zone than the official map suggests, it's worth asking a local nursery before ordering large quantities of bare-root plants. Snow load is another issue in areas with heavy winter snowfall — loosely tie together the top branches of young evergreen hedges before their first winter if needed.

Common hedge-planting mistakes

• Planting too deep. The root collar should sit level with the soil surface, not buried under several centimetres of soil on top.
• Digging individual holes instead of one continuous trench. Roots struggle to spread sideways through hard, unimproved soil left between separate holes.
• Skipping the soak for bare-root plants. Dried-out roots are one of the most common causes of death in the first few weeks after planting.
• Planting too close together to get a denser hedge faster. Overcrowded plants compete for water and nutrients and rarely fill in faster than a row planted at the correct spacing.
• Underestimating watering needs the first summer. A newly planted hedge without an established root system dries out far faster than a mature, established one.
• Cutting hard into old wood on conifers right after planting. Arborvitae and other conifers rarely resprout from bare, old wood.
• Ignoring weed competition around the base. Grass and weeds right next to the hedge steal water and nutrients that would otherwise go to the new roots.
• Eyeballing a straight row without using a string line. A visibly crooked hedge can't be straightened later without digging it up again, while a string line takes only a few minutes to set up.

Frequently asked questions

Can I plant a hedge in the middle of summer?
Yes, if the plants are container-grown and you can water regularly, but avoid planting during a stretch of extreme heat and drought, since new roots dry out before they've gripped the soil. Bare-root plants, on the other hand, need to go in while dormant, not in the middle of summer.

How deep should I plant a hedge?
The plant should sit at the same depth it grew at the nursery, with the root collar level with the finished soil surface. Planting too deep is one of the most common mistakes and raises the risk of rot at the base of the stem.

Do I need to fertilise at planting time?
No, it's better to wait until the spring after planting. Fresh roots can be damaged by too much fertiliser salt, and a newly planted hedge usually does better with consistent moisture than extra nutrients in its first year.

How often should I water a newly planted hedge?
Plan on one or two deep waterings a week in dry weather for the first two to three months, favouring infrequent, thorough soaks over light, frequent sprinkling. Sandy soil may need watering more often than clay.

Can I mix different hedge species in the same row?
Yes. A mixed hedge can look less rigid, flower across more of the season, and become less vulnerable if a single species is hit hard by disease or pests in a given year. Keep in mind that species with different growth rates can produce an uneven height unless you prune to match the slowest grower. Working in a flowering species like lilac or rugosa rose also benefits pollinators — our guide to bee-friendly plants covers more options.

How close to my property line can I plant a hedge?
This varies by location and local rules, but a common starting point is to leave at least half the hedge's expected mature width as a gap from a neighbouring property, to avoid future disputes over branches and shade. Check local regulations before planting near a boundary.

Why is my hedge uneven even though I planted everything at once?
This usually comes down to differences in planting depth, soil quality or watering along the row. Check whether the weaker-growing plants were set deeper, sit in poorer-drained soil, or are closer to competing grass and weeds.

Can I move an already-planted hedge if I regret the placement?
Yes, if it's done within the first year or two while the root system is still small and compact. The older and more established a hedge gets, the bigger and more disruptive the move becomes, and mature plants tolerate transplanting far less well.

Want a reminder for when to plant, prune or feed your hedge based on your zone? You'll find it in our newsletter.