Top Steps for Healthy Growth, Strong Vines & Abundant Blooms

Spring is the most important season for setting your clematis up for success. In Kamloops, where spring warms quickly and summer heat arrives fast, these steps help vines establish strong roots, resist wilt, and bloom reliably.

Wake‑Up Check (Early Spring – March/April)

As soon as snow is gone and soil is workable.

• Clear away winter debris around the base.
• Check for new buds at the crown — this tells you pruning group.
• Look for winter damage and remove dead or broken stems.
• Refresh mulch but keep it 2–3 inches away from the stems to prevent rot.

 Pruning (Timing Depends on Group)

Pruning is the #1 factor in whether clematis bloom well.  Knowing your pruning group prevents accidental removal of flower buds.

For Kamloops gardeners, Group 3 varieties are the most reliable because they bloom on new growth after winter cold.

Group 1 (Early bloomers)

• Examples: montana types.
• Prune only after flowering (late spring).
• In early spring: remove only dead or damaged stems.

Group 2 (Large‑flowered hybrids)

• Examples: Nelly Moser, Henryi.
• Light prune in early spring (March/April).
  • Remove dead tips.
  • Cut remaining stems back to the first pair of strong buds.
• Avoid hard pruning — you’ll remove early blooms.

Group 3 (Late bloomers — great for Kamloops)

• Examples: Jackmanii, viticella types, tangutica.
• Hard prune in early spring
  • Cut all stems back to 12–18 inches above soil.
  • Leave 2–3 strong buds per stem.
• This encourages vigorous new growth and heavy summer bloom.

 Watering (Start Early, Stay Consistent)

Kamloops’ dry climate means clematis need moisture early.

• Begin deep watering once soil thaws.
• Water slowly and deeply to encourage deep roots.
• Avoid letting soil dry out completely in spring winds.

 Fertilizing (April–May)

Clematis are hungry vines, but they prefer steady, gentle feeding.

Early Spring (April):

• Apply a balanced fertilizer such as 10‑10‑10 or 6‑8‑6.
• Scratch lightly into soil around the dripline.
• Water deeply afterward.

Mid‑Spring (May):

• Switch to a bloom‑boosting fertilizer (higher phosphorus).
  • Example: 5‑10‑5 or similar.
• Avoid high‑nitrogen lawn fertilizers — they cause leafy vines with few flowers.

Organic options:

• Compost top‑dressing
• A handful of bone meal
• Worm castings around the root zone

All are excellent for slow, steady nutrition.

• How To Fertilize Clematis In Spring – The Secret To Big Blooms!

 Root Cooling & Mulching

Clematis roots must stay cool in Kamloops’ heat.

• Add 2–3 inches of mulch (shredded bark, compost, leaf mold).
• Plant low perennials at the base:
  • Hardy geranium
  • Nepeta
  • Sedum
  • Hosta (in partial shade)
• Avoid dark stones — they overheat the crown.

 Support & Training

Spring is the easiest time to guide new growth.

• Tie new shoots loosely to trellises or wires.
• Clematis climb by twining leaf stems, so supports must be thin (½ inch or less).
• Add extra twine or mesh if your trellis is too thick.

 Early Pest & Disease Prevention

Spring is the best time to prevent issues before they start.

• Watch for slugs on emerging shoots.
• Ensure good airflow to reduce powdery mildew later in summer.
• Clematis wilt: Sudden collapse of stems; remove affected stems immediately.
  • More common in large-flowered hybrids.
  • Remove any suddenly collapsed stems immediately.

• Aphids & spider mites: Hose off or use safe pest controls such as ……

 Spring Feeding & Bloom Boosting Schedule