Hedge Spacing Made Simple: How to Plant Instant Hedging for a Thick, Seamless Result

A hedge can be one of the most valuable features in a garden. It adds structure, softens boundaries, improves privacy and can even help reduce wind and noise. But the difference between a hedge that looks beautifully uniform and one that stays gappy for years often comes down to one thing: how it’s planted.

When people talk about hedge spacing, they are usually thinking about traditional plants in individual pots. Instant hedging works differently. Your hedge already arrives as a pre-grown unit (either a trough or a hedgebag), which means much of the “guesswork” about spacing is removed. You are essentially installing ready-made hedge panels that are designed to connect together.

If you’re still comparing hedge types, formats and long-term maintenance requirements, our guide on how to choose the right hedge for your garden explains how growth rate, height and overall finish should influence your decision.

This guide explains how to plant instant hedging at the right density, how close the units should be placed, and how to choose between troughs and hedgebags depending on the finish you want. It also includes practical tips that prevent the most common planting mistakes.

This article is written specifically around the instant hedge products we supply:

Instant hedge troughs:

• Euonymus Jean Hugues Instant Hedge 40–50cm Trough – Evergreen
  
• Japanese Holly Instant Hedge 40–50cm Trough – Evergreen
• English Yew Instant Hedge 60–80cm Trough – Evergreen
• Photinia Red Robin Instant Hedge 60–80cm Trough – Evergreen
• Portuguese Laurel Instant Hedge 70–90cm Trough – Evergreen
• Golden Privet Instant Hedge 70–90cm Trough – Evergreen
• Green Privet Instant Hedge 80–100cm Trough – Evergreen
• Purple Beech Instant Hedge 70–90cm Trough – Deciduous
• Native Mix Instant Hedge 80–100cm Trough – Deciduous
• Hornbeam Instant Hedge 90–100cm Trough – Deciduous

Instant hedging hedgebags:

• Native Mix Instant Hedge 170cm (5–6ft) Hedgebag – Deciduous
• Green Privet Instant Hedge 160cm (5–6ft) Hedgebag – Evergreen
• Hornbeam Instant Hedge 160cm (5–6ft) Hedgebag – Deciduous
• Portuguese Laurel Instant Hedge 140cm (4.5–5ft) Hedgebag – Evergreen
• Cherry Laurel Instant Hedge 170cm (5–6ft) Hedgebag – Evergreen

What “Spacing” Means for Instant Hedging

With instant hedging, you are not spacing individual plants along a line. You are joining hedge sections together to form one continuous hedge.

That means your key spacing decisions are:

1. How close the units sit to each other (to avoid gaps)
2. How deep and wide your trench is (for root establishment)
3. Whether you install in a single line or create a thicker, double line (only if you have the room)

Most of the time, instant hedging should be planted as a single row, with each unit placed directly next to the next.

Troughs vs Hedgebags: What’s the Difference?

Both are “instant hedging”, but they suit different goals.

Instant Hedge Troughs (Lower and Structured)

Trough-grown instant hedge units are ideal when you want:

• A neat, defined border quickly
• A low to mid-height hedge to shape
• A hedge for a front garden, path edge or modern design

Typical examples you sell:

• Euonymus Jean Hugues 40–50cm trough
• Japanese Holly 40–50cm trough
• Green Privet 80–100cm trough

Troughs are excellent for “clean lines” and controlled shaping from the start.

Instant Hedge Hedgebags (Taller and More Screening)

Hedgebags are designed for:

• Immediate privacy
• Taller screening in one step
• Faster impact along boundaries

Typical examples you sell:

• Cherry Laurel 170cm hedgebag
• Green Privet 160cm hedgebag
• Portuguese Laurel 140cm hedgebag
• Native Mix 170cm hedgebag

If you have overlooked areas or a new build garden, hedgebags deliver the quickest transformation.

How Close Should You Plant Instant Hedge Units?

The simple rule

Place each trough or hedgebag unit directly next to the next one, with no intentional gaps.

Instant hedging is grown to be “butt-jointed” into a continuous line. Leaving spaces between units defeats the purpose and can create permanent weak points in the hedge line.

In practice:

• Align the units tightly
• Keep the top line consistent
• Backfill evenly so the root area is supported

The Best Planting Method for Seamless Results

Step 1: Mark your hedge line

Use a string line between two stakes. This matters more than people think, because even a slight curve or wobble becomes very visible once the hedge is established.

Step 2: Dig a trench, not individual holes

A trench creates:

• consistent root space
• a straighter line
• easier positioning of each unit

Dig the trench:

• slightly wider than the rootball
• deep enough that the rootball sits level with the surrounding soil

Step 3: Improve the soil

Mix compost or well-rotted organic matter into the excavated soil. Avoid overfeeding with high nitrogen at planting time — you want root growth first, not soft top growth.

Step 4: Place units tightly together

This is where “spacing” happens. Units should touch.

Use the string line to keep the front face consistent, especially with tall hedgebags like:

• Cherry Laurel 170cm
• Green Privet 160cm
• Hornbeam 160cm

Step 5: Backfill and firm in stages

Backfill halfway, water, then finish backfilling and water again. This removes air pockets and helps settle soil around roots.

Step 6: Water deeply for the first season

Even robust evergreens like Portuguese Laurel and Cherry Laurel need consistent watering while establishing.

Choosing the Right Instant Hedge for the Look You Want

Because you sell several species and sizes, your “spacing” outcome also depends on what you’re trying to achieve.

For a modern, compact structure (low hedge)

Choose:

• Euonymus Jean Hugues 40–50cm trough
• Japanese Holly 40–50cm trough

These give a crisp, formal effect and are excellent for shaping.

For evergreen privacy without waiting

Choose:

• Portuguese Laurel 140cm hedgebag
• Cherry Laurel 170cm hedgebag
• Green Privet 160cm hedgebag

If you want screening in one go, hedgebags are the most dramatic before-and-after change.

For a classic hedge that holds shape

Choose:

• English Yew 60–80cm trough

Yew is slower growing but incredibly long-lived and neat with trimming.

For colour contrast and seasonal interest

Choose:

• Photinia Red Robin 60–80cm trough (red new growth)
• Purple Beech 70–90cm trough (deciduous with rich colour)

These work well in design-led gardens.

For a more natural, wildlife-friendly look

Choose:

• Native Mix 80–100cm trough
• Native Mix 170cm hedgebag

Great for informal boundaries and biodiversity.

Should You Plant Instant Hedging in a Double Row?

Usually, no. Instant hedging is already dense and designed to form a hedge in a single line. However, a double row can be useful if:

• you want maximum thickness
• you are planting a windbreak
• you have plenty of width to spare

If you do plant a double row:

• use a staggered pattern (zig-zag)
• leave enough width so both rows have root space
• expect more water demand

For most residential gardens, a single row is cleaner, easier, and delivers a better-looking result with instant hedging.

Avoid These Common Spacing Mistakes

1. Leaving small gaps “to let it grow.”

Instant hedging is meant to connect. Gaps cause visible weak points and uneven density later.

2. Planting too deep

If the rootball is buried too far below soil level, you increase the risk of root stress. Always keep it level.

3. Not straightening the line

A hedge line that wanders will never look as sharp as one installed with a string line.

4. Underwatering early on

The biggest cause of poor establishment is inconsistent watering in the first season, especially for tall hedgebags.

How Long Until Instant Hedging Looks Fully Established?

Instant hedging looks “finished” immediately, but it still needs time to root into the soil. In UK conditions:

• First season: roots establish, hedge holds form
• Second season: stronger growth and thickening
• After that, you can trim for shape and density

Evergreen varieties like Euonymus, Privet and Laurel provide year-round presence from day one.

Frequently Asked Questions

Can I cut instant hedging after planting?

Light trimming is fine, but avoid heavy pruning immediately after planting. Let roots settle first.

Do I need to feed instant hedging?

A light spring feed the following season is ideal. Focus on watering first.

Is instant hedging suitable for small gardens?

Yes. Trough options like Euonymus Jean Hugues and Japanese Holly are perfect for compact spaces.

What is the easiest instant hedge to shape?

Euonymus Jean Hugues and Japanese Holly respond very well to clipping and keep clean lines.

Summary

If you want a hedge that looks uniform, dense and intentional, instant hedging makes spacing simple. Instead of calculating plants per metre, you install connected hedge units in a straight trench, placed tightly together with a consistent soil level and thorough watering.

Whether you want:

• low, modern structure (Euonymus, Japanese Holly)
• immediate privacy (Cherry Laurel, Portuguese Laurel, Green Privet hedgebags)
• classic long-term form (English Yew)
• a natural mixed boundary (Native Mix, Hornbeam, Purple Beech)

The key is always the same: set the line, join the units neatly, and support establishment with proper watering.