YOUR SIMPLE GROWING PLAN
One pot. Here’s the plan.
Before you start Plant in moderate spring or early-fall weather. Secure a support for its non-clinging stems; protect an exposed container from severe winter freezing.
What you need · pot, mix & supplies
- 1 labeled Clematis ‘Arabella’ nursery plant
- One pot at least 18 inches wide and deep, with drainage holes
- Fresh potting mix, a 6-ft trellis or obelisk, and soft plant ties
The soil
Miracle-Gro Organic Potting Mix (US, with starter nutrients; check your bag for its additional-feeding directions)
Is this your plant? Choose blue-purple ‘Arabella’ from the Integrifolia Group. Its stems need tying; this plan cuts them to about 12 inches in late winter or early spring. White Arabella is a different plant with a different pruning plan.
A sunny patio with a securely anchored support. Start with nursery plant.
One large pot with drainage, plus a separate, securely anchored 6-ft support.
Buy blue-purple ‘Arabella’, a non-clinging Group 3 clematis. White Arabella is different.
See the planting illustration
- 01
Set up the support first
Anchor the trellis so wind cannot pull over the pot. Leave access to the mix for watering. Shade the pot’s sunny side with another container while keeping the shoots in sun.
- 02
Keep this crown at the surface
Fill with moist potting mix and set ‘Arabella’ with its crown at the mix surface. Leave 1 inch below the rim for watering. Do not borrow the deep-burial rule for large-flowered climbing clematis.
- 03
Water the whole root ball
Water slowly until excess drains. Check the original nursery root ball as well as the surrounding mix over the first few weeks.
- 04
Tie new stems loosely
Guide stems up the support and add loose ties as they lengthen. ‘Arabella’ does not grip a trellis by itself; leave room for stems to thicken.
Other ways to start
Plant the same cultivar in a garden bed+
Allow about 3 ft of width beside a support or a low shrub it can scramble through. Keep the crown at ground level in fertile, well-drained soil. An established plant in fertile garden soil does not need the container feeding schedule.
Make another plant by layering+
Pin a flexible, healthy shoot into a small pot of moist propagation mix while it remains attached to the parent. Let the tip stay above the mix. Keep it attached until a separate root system forms; layering can take one to two years. It is an option for an established plant, not a quick replacement for buying a nursery start.
YOUR EVERYDAY ROUTINE
Water & fertilizer at a glance.
- Water when
- Check daily during growth. Water as the upper inch starts drying; drain. A dormant winter pot needs less water, but roots should not dry out completely. Empty the saucer or outer pot after draining.
- Fertilizer
- Miracle-Gro Water Soluble All Purpose Plant Food (US 24-8-16)
- Amount
- 1 level tablespoon in 1 US gallon of water
- What that amount covers
- Mix into water. Apply only enough solution to wet this pot and drain; the mixing batch is not the amount to pour on.
- How often to feed
- Every 14 days during active growth.
- When to start or pause
- Read the potting-mix bag for when additional feed begins. Feed only during active spring or summer growth; delay if wet and stop in winter dormancy.
The 14-day interval is within the manufacturer’s outdoor range. This is one measured feeding program, not an extra dose over another full-rate fertilizer.
Product directions ↗Use level measures and the exact US formula shown. If your label differs, follow it; do not transfer this dose to another formula or combine feeding programs.
See the watering & feeding illustrations
US PRODUCT REFERENCE
Miracle-Gro
Water Soluble All Purpose
24-8-16Soluble: mix into water
Check the official US product ↗Illustrated reference; check the manufacturer’s current packaging and US label.
Summer flowers and stem growth
‘Arabella’ has blue-purple flowers that fade toward mauve and pale blue. Monrovia lists trained growth around 3–6 ft tall and 2–3 ft wide; other growing conditions can produce longer stems. Expect summer into early fall color once established, rather than an instant wall of flowers.
Planting windows and winter protection
Plant in moderate spring or early-fall weather. Monrovia lists USDA zones 4–9 for this cultivar in the ground. Roots in an exposed pot freeze more readily: in cold-winter areas, arrange a sheltered overwintering place or sink the pot into the ground before hard freezing.
For regional planting windows, find your local Cooperative Extension office ↗.
Something looking off?
When do I prune this clematis?+
For labeled blue-purple ‘Arabella’, cut old stems to about 12 inches above the mix in late winter or early spring, just above healthy buds and before vigorous new growth. Protect shoots emerging at the base. Monrovia gives this 1-ft cut for ‘Arabella’; do not hard-prune an unidentified clematis from this recipe.
Why will it not climb by itself?+
That is normal for ‘Arabella’. It scrambles rather than clinging. Tie stems loosely to the support, or let them grow through a low shrub.
Can I use this pruning plan for any clematis?+
No. Spring-flowering Group 1 and many early-flowering Group 2 cultivars need different treatment. Keep the nursery name and pruning group; hard cutting the wrong plant can remove its coming flowers.
Checking the cultivar and refreshing the pot
Distinguish Arabella from White Arabella
Blue-purple ‘Arabella’ is an Integrifolia Group plant with non-clinging stems. The white-flowered cultivar sold as White Arabella is not the same plant and has a different pruning recommendation.
Refresh old mix and repot when crowded
Refresh the top 2 inches of old mix each spring, taking care around the crown and shallow roots. Fresh enriched mix also brings nutrients, so account for it before adding liquid feed. When roots fill the pot and watering becomes difficult, repot or move the plant into a garden bed. Keep drainage holes open over winter.
Help with your next step.
- Set up a pot that drains
Choose drainage holes and manage the saucer before you plant.
- Read the fertilizer already in your mix
Check the actual bag before adding a second fertilizer program.
Sources, dates & detailed PDF
Editorial plans, not results from a Plant Care Steps growing trial. Compiled with AI assistance; they have not yet had an independent horticultural review. Editorial approach.
- Monrovia: Arabella size, US zones, watering, and Group 3 pruning ↗
- RHS: Arabella identity, crown depth, and propagation ↗
- RHS: clematis containers, roots, and feeding ↗
- RHS: Group 3 pruning ↗
- RHS: White Arabella is a different Group 2 cultivar ↗
- Manufacturer: US fertilizer formula and application directions ↗
- Manufacturer: starter feed in the named potting mix ↗
- ASPCA: clematis is toxic to cats and dogs ↗
Something needs updating? Suggest a correction
Published · Updated
Sources checked View sources ↗
Detailed PDF ↓Full reference edition with expanded explanations and illustrations. Its publication dates appear in the file.
