How to prune clematis after first bloom: group 2 techniques

TL;DR

Group 2 clematis (Nelly Moser, The President, Jackmanii Alba) bloom on old wood (spring) AND new shoots (summer-fall). After first bloom (June), prune lightly: remove spent flowers, cut long shoots partway back to healthy side buds. This triggers re-bloom in July-August.

What is group 2 clematis?

Group 2 clematis are "repeat bloomers." They form flower buds in the previous year, so they bloom in May-June on old wood. Then, IF you prune correctly, new shoots grow that re-bloom in July-September.

These are well-known group 2 cultivars:

• Nelly Moser: Large pink-red with white stripe
• The President: Deep purple, large
• Jackmanii Alba: White, elegant
• Hagley Hybrid: Magenta-pink
• Carnaby: Dark pink with light stripe

Their advantage: two bloom periods per year if you maintain them well.

Why group 2 post-bloom pruning matters

Without pruning, group 2 clematis:

• Grow long and thin
• Bloom only at the top in spring
• No summer blooms
• Bare legs

With pruning you get:

• Two bloom periods
• Fuller growth
• Better shape
• More flowers

The key: distinguish old vs new wood

Group 2 works like this:

March: You prune lightly back to healthy wood. Removes only damaged parts.

May-June: Plant blooms on old wood (last season's growth).

June-July: After first bloom you prune CAREFULLY. This stimulates new shoots.

July-September: New shoots bloom.

Post-bloom pruning: June-July step by step

Step 1: Wait until bloom is past

Wait until most flowers are gone. Don't let everything open and wilt. You want to prepare for re-bloom.

Step 2: Remove spent flowers

Cut off spent flower heads. This stimulates blooming sooner than seed setting.

Step 3: Cut long shoots back partway

This is the main step. Find long shoots (that grew in spring). Cut these back to roughly 30-50 cm, BUT:

• Leave at least two healthy leaf pairs
• Cut just above a bud or leaf pair
• Don't remove everything - leave bottom 50% intact

Why? This stimulates side shoots to grow from each bud you cut above. Side shoots bloom in July-August.

Step 4: Remove dead/weak wood

If you see dead, broken, or very thin shoots, remove those. This helps the plant concentrate energy on strong growth.

Which shoots do you cut back?

Not all. Group 2 pruning is SELECTIVE:

Cut back (to 30-50 cm):

• Long shoots without flowers
• Thin, floppy shoots
• Shoots that droop or weaken

Leave standing (only spent flowers off):

• Short shoots with plenty of leaves
• Strong, upright shoots
• The bottom 50 cm of the plant

This gives a layered, full shape. Some shoots grow further up, others become shorter and bloom sooner.

Timing: Why June-July?

This moment is critical:

• Too early (May, during first bloom): you damage flower buds
• Just right (June, after first bloom): stimulates perfect re-bloom
• Too late (August): might be too late for full summer blooming

If your clematis blooms in May-June, you prune in June-July, right AFTER bloom ends.

Variety-specific variations

Nelly Moser, The President: Grow quite vigorously. Can tolerate substantial pruning. Back to 40-50 cm is good.

Jackmanii Alba, Hagley Hybrid: Somewhat more delicate. Prune more cautiously, back to 50-60 cm.

Carnaby: Strong grower. Can go back to 30-40 cm.

What happens after you prune?

Week 1-2 after pruning: Plant seems quiet. No visible growth.

Week 2-4: Side shoots first appear from the eyes where you cut. They grow fast.

May-July: Side shoots strengthen. Leaves grow and flower buds form.

July-August: Second bloom starts. Same large flowers as in June, now on new shoots.

August-September: Full bloom on summer growth.

Frequently asked questions

Can I prune group 2 hard (like group 3)?

No. Group 2 blooms partly on old wood. Hard pruning (back to ground) removes all flower buds and you get no spring bloom.

Group 2 pruning is LIGHT in March, SELECTIVE in June.

My group 2 doesn't re-bloom in summer - why?

Possibilities:

1. You didn't prune enough after first bloom (cut harder next year)
2. Too little sun (clematis need at least 4-5 hours)
3. Too much nitrogen fertilizer (encourages leaves not blooms)
4. Plant is young (first 1-2 years less re-bloom)

How long until second bloom after pruning?

Usually 4-6 weeks. June pruning = July-August bloom.

Do I prune in March too (for group 2)?

Yes, but LIGHTLY. In March you remove only dead and damaged wood. Do not cut back. Otherwise you damage spring flower buds.

Step-by-step post-bloom pruning plan

Step 1: Monitor first bloom

Does your clematis look full? Lots of flowers? Good. Wait until bloom is past (late June).

Step 2: Remove spent flowers

Cut off all brown, wilted flower heads. Leave fresh flowers if you still have some.

Step 3: Select long shoots

Find shoots that are long and have few/no flowers. Those are your targets to cut.

Step 4: Cut carefully

Cut back to 30-50 cm. Always leave 2+ healthy leaf pairs. Cut at an angle just above a bud.

Step 5: Wait for re-bloom

Water regularly. By July you see first side shoots, by August full bloom.

The two-bloom advantage of group 2

This is why group 2 is popular. With three simple steps you get:

1. Spring bloom (May-June)
2. Summer bloom (July-September)
3. Full shape

Every year you repeat this routine. Group 2 clematis gets more beautiful over the years.

Discover your own garden design

At [gardenworld.app](https://gardenworld.app) you can upload your front yard and visualise how group 2 clematis blooms - with two bloom periods, shape, and surrounding plantings. Plan your garden so clematis blooms all year.