Yes—remove climbing rose suckers when they arise from below the graft or from the rootstock, because they can compete with the named rose for growth. First identify where a shoot begins: a vigorous stem emerging from above the graft may be a valuable climbing cane, not a sucker, and should not be removed just because it grows quickly.
What a Rose Sucker Is
A sucker is a shoot produced by a rose’s roots or rootstock rather than by the named variety growing above it. Many garden roses are grafted: the desired rose is joined to a different, often vigorous rose that supplies the roots and lower stem. A shoot from that rootstock may look unlike the climbing rose you chose and can eventually make the plant less true to type.
People also use “sucker” loosely for any long, upright, fast-growing cane. That description alone is not enough to identify one. Climbing roses naturally produce strong new canes, and these are often exactly the stems a gardener wants to keep. The point from which a shoot emerges matters more than its speed, height, or apparent unruliness.
How to Tell a Sucker From a New Cane
Follow the shoot down to its origin. If it rises from the soil away from the main base, gently move aside mulch and loose soil to see whether it is attached to a root. If it comes from the lower stem, locate the graft union, usually a visibly swollen or knobbly junction near the base of a grafted rose. A shoot originating below that junction is likely rootstock growth. One arising above it belongs to the cultivated rose.
Appearance can offer clues, but it is not conclusive. Rootstock shoots may have leaves, prickles, or a growth habit different from the flowering top. Yet leaf color, leaf count, and thorniness vary among roses, so do not rely on one feature. A vigorous cane from above the graft may have foliage that looks somewhat different while young, or may simply be a normal new cane that has not yet flowered.
Some roses grow on their own roots rather than being grafted. On these plants, a shoot from the roots is still part of the same variety, not a rootstock sucker. It may be useful as new growth or may appear outside the space you want the rose to occupy. In that case, decide whether to keep or remove it based on placement and the plant’s condition, not on the assumption that it is a different rose.
Why Remove Rootstock Growth
Rootstock shoots can take water, nutrients, and growing space from the top growth, particularly if they are allowed to develop into substantial stems. They may also spread beyond the intended shape of a climber. If the rootstock has different flowers or growth habits, it can eventually become a conspicuous part of the plant and obscure the variety you meant to grow.
Removing a confirmed sucker helps maintain the balance and appearance of a grafted rose. It does not mean every new shoot at the base is harmful. A new cane arising above the graft can renew an older climber and provide a stem to train over a support. Removing such a cane by mistake may reduce flowering potential or leave the rose with fewer stems to cover its framework.
How to Remove a Sucker
For a shoot emerging from a root, expose enough of its base to see the connection. Remove it as close to the point of origin as practical. Cutting only at soil level can leave a living piece that may regrow, while tearing or wrenching can disturb roots or damage the plant. Use clean, sharp pruning shears for a stem that cannot be removed neatly by hand, and avoid cutting into the main root or crown.
For a sucker arising from below the graft on the stem, trace it to its junction and cut it off close to the stem without gouging the rose. Do not cut into the graft union itself. If the shoot is large, take care to support it as you cut so it does not tear bark from the parent stem.
- Move mulch and loose soil aside so the shoot’s origin is visible.
- Confirm whether it begins below the graft, above it, or on an own-root plant.
- Remove only the shoots you have identified as unwanted rootstock growth.
- Make a clean cut at the point of origin, then replace the soil and mulch without burying the graft.
- Check the base again during routine care, since new shoots can appear.
Prune in suitable conditions for the plant and your local climate. Avoid working on a rose when you cannot clearly see the shoot’s base, and do not make a rushed cut simply because a cane looks different. If identification remains uncertain, leave the shoot temporarily and watch how it develops; a cautious delay is usually preferable to removing a useful cane.
When to Remove Suckers
Remove a clearly identified rootstock sucker when you notice it, rather than waiting for it to become a thick, established stem. Small shoots are easier to trace and remove with less disturbance. There is no need to remove a healthy new cane above the graft just because it appears at an inconvenient time; its value depends on the rose’s structure, flowering habit, and available space.
Seasonal pruning for climbing roses varies by type. Some climbers flower mainly on older wood, while others flower repeatedly on newer growth. This affects how you prune wanted canes, but it does not change the basic test for a sucker: determine its origin first. When pruning a rose whose flowering pattern is unfamiliar, preserve healthy canes until you have a reason to remove them.
What to Do With a Useful New Cane
A strong cane from above the graft is often useful for training. Guide it along the support and secure it loosely with suitable ties, leaving room for the stem to thicken. On many climbing roses, training canes more horizontally or diagonally encourages flowering shoots to develop along their length, rather than leaving most of the display at the top. The best arrangement depends on the rose and the support, so avoid forcing a stiff cane into a sharp bend.
Keep a new cane if it fills a gap, replaces an old or damaged stem, or helps create an even framework. Remove it only if it is dead, diseased, badly positioned, crossing in a way that causes damage, or excessive for the space. A cane that emerges near ground level is not automatically a sucker: its position relative to the graft is the deciding factor.
Common Mistakes and Problems
The most consequential mistake is cutting every vigorous basal shoot. Climbers need replacement canes, and healthy growth from above the graft can be valuable. Another mistake is judging by foliage alone. Young leaves can differ from mature leaves, and varieties vary in their appearance, so inspect the attachment point before pruning.
Cutting a rootstock shoot at ground level without checking its base can leave part of it in place. Conversely, digging aggressively to remove every visible root may damage the rose. Expose only what is needed to make a careful cut. If several shoots return repeatedly from the same area, inspect the source and confirm whether the plant is grafted or own-root; repeated growth can be a sign that the original source was not fully removed, but it does not by itself prove a particular cause.
Also avoid burying the graft while tidying soil around the plant. The recommended planting depth for a graft can vary with climate and local practice, so follow reliable regional rose-growing guidance rather than assuming that deeper is always better. Mulch should not be heaped against the stems.
Grafted and Own-Root Roses Compared
With a grafted rose, a shoot below the graft belongs to the rootstock and is generally removed. With an own-root rose, shoots from the roots are genetically part of the same rose, so they are not rootstock suckers. They can still spread the plant, compete for room, or make a climber difficult to manage, but the choice to remove them is a matter of growth and design.
If you do not know which kind you have, check planting records, a label, or reliable information for the rose’s variety. You can also inspect the base for a graft union, though it may be hard to see on an older plant. Do not infer that a rose is own-root simply because no obvious union is visible; soil, age, and the plant’s shape can make the junction difficult to locate.
Frequently Asked Questions
Should I remove every shoot growing from the base of a climbing rose?
No. Remove shoots confirmed to come from below the graft on a grafted rose. Keep healthy shoots from above the graft if they help renew or train the climber.
Can I tell a sucker by its leaves?
Leaf appearance may provide a clue, but it is not reliable on its own. Trace the shoot to where it joins the plant and compare that point with the graft union.
Should I pull a rose sucker out by hand?
Only if it separates easily and you can avoid damaging the plant. For a firmly attached or woody shoot, expose the base and make a clean cut rather than pulling hard or tearing the parent stem.
Will a sucker flower?
A rootstock shoot may flower if it matures, but its flowers may not match those of the cultivated rose. Whether it flowers does not establish whether it is a sucker; its point of origin does.
Do own-root climbing roses have suckers?
They can send up shoots from their roots, but those shoots are part of the same rose rather than a different rootstock. Remove them if they are unwanted or poorly placed, not because they necessarily threaten the variety.
Bottom Line
Remove confirmed shoots growing from below the graft on a grafted climbing rose, and cut them back at their point of origin with care. Do not remove a vigorous cane merely because it appears at the base or grows quickly. Trace it first: on a climber, the right new cane may be essential to a healthy, well-trained framework.