What Are the Different Hedging Root Types?

What does root type mean when buying hedging?

When nurseries refer to hedging root types, they are describing how the plants have been grown, lifted and supplied. The four main buying formats are bare root, root ball, pot grown and instant hedging.

The term is useful, but it is not completely literal. Bare root, root ball and pot grown describe how the root system is supplied. Instant hedging describes a mature, pre-grown section of hedge, which may be supplied in a trough, bag or established root section depending on the product.

Root type affects the planting window, purchase price, handling requirements and the amount of immediate coverage. It does not replace the need to choose a hedge species that suits your soil, position and available space.

How do the four hedging root types compare?

What is bare root hedging?

Bare root hedging plants are grown in open ground and lifted while dormant, with the soil removed from around the roots. They are light to transport and usually the most economical way to plant a long boundary or a large quantity of hedging.

Many bare root plants are deciduous and arrive without leaves. This is normal during dormancy and is not, by itself, a sign that the plant is unhealthy. The exposed roots do need careful handling. Keep them covered, cool and moist, and prepare the planting area before delivery so they can be planted promptly.

Bare root is often the best choice when budget and total hedge length matter more than immediate density. It is less suitable when the planting work must take place outside the lifting season or when a finished screen is needed straight away.

What is root ball hedging?

Root ball hedge plants are also grown in the field, but they are lifted with a substantial ball of soil retained around the roots. The soil ball helps protect the root system during lifting, transport and planting.

Root-balled stock is commonly offered in larger sizes than young bare root plants and can provide more height and presence from the day it is planted. It can also offer good value compared with a pot-grown plant of a similar size.

The trade-off is weight. Larger root balls may require pallet delivery, more than one person to move them or suitable handling equipment. They are seasonal plants and still need close attention to watering while establishing. A taller root ball gives a head start, but it should not be confused with a fully knitted instant hedge.

What is pot-grown hedging?

Pot-grown hedge plants are raised and supplied in containers, with their roots held in growing medium until planting. This protects the roots during handling and gives customers the broadest choice of planting dates.

Pot-grown hedging can generally be planted throughout the year if the soil is neither frozen nor waterlogged and reliable watering is available. It is particularly useful for spring and summer projects, replacing gaps in an existing hedge or buying varieties that are not available bare root or root balled.

The pots add growing, handling and transport costs, so pot-grown plants may cost more than smaller bare root stock. They are not maintenance-free: plants set out in warm or dry conditions need thorough watering, and the original pot compost must not be allowed to dry out while roots move into the surrounding soil.

What is instant hedging?

Instant hedging is grown and clipped in advance so that several plants form an established section rather than a row of separate young plants. Many products are supplied in sections around one metre wide, but dimensions, root format and planting density vary, so the exact product specification should always be checked.

This format provides the greatest immediate height and structure and is useful where a new boundary needs to look established quickly. However, “instant” does not guarantee complete privacy in every case. Density depends on the species, supplied size and time of year, and deciduous instant hedges still lose their green leaves in winter.

Instant units are normally the most expensive and physically demanding option. Plan the route from the delivery point to the prepared trench, check the unit width and weight, and arrange the labour or machinery needed before the plants arrive.

Which hedging root type should you choose?

Choose bare root for value and long hedge runs

Bare root is usually the strongest option when you are planting during the dormant season, need a large quantity and are willing to wait for younger plants to fill out.

Choose root ball for larger seasonal plants

Root ball is useful when you want more initial height than smaller bare root plants can provide, but can plan the work around seasonal availability and safely handle the extra weight.

Choose pot grown for planting flexibility

Pot grown is normally the most practical choice outside the bare root and root ball season. It also works well for shorter runs, gap filling and projects where planting dates may change.

Choose instant hedging for immediate structure

Instant hedging suits projects where the appearance of the boundary from the outset matters more than keeping the initial cost and handling requirements down.

Does root type affect the finished hedge?

The same species can develop into a good mature hedge from different starting formats. Root type mainly changes what arrives, when it can be planted, how much it costs and how much early impact it provides. It does not guarantee the long-term result.

Smaller bare root plants can establish well and may gradually close some of the initial size difference, while larger plants provide more immediate presence but have a bigger root system and canopy to support. Whichever format you choose, suitable soil, correct planting depth, sensible spacing, weed control and consistent watering during establishment remain essential.

What other pot and root terms might you see?

Cell-grown and plug-grown plants have compact root systems held in small cells or plugs of growing medium. P7 and P9 usually describe small pots by their approximate dimensions. Container-grown and potted are often used as alternatives to pot grown.

These labels give useful information about the plant’s starting format, but they do not tell you everything about its height, age or density. Compare the full product specification, including plant height, pot or root size, quantity per metre and seasonal availability.

What should you check before ordering?

• Choose the species for the site before deciding how its roots should be supplied.
• Check the stated plant height, root or container specification and recommended number of plants or units per metre.
• Confirm the live availability and expected delivery period for seasonal plants.
• Prepare the planting area and read the relevant hedge planting guidance before the order arrives.
• Plan unloading and access carefully for root balls, large pots and instant hedge units.
• Make sure water will be available throughout establishment, especially for larger plants and warm-weather planting.