Clematis Fertilizer for Climbing Vines & Buds

When your clematis may benefit from feeding

When the vine breaks dormancy in spring and starts running new growth up its support
When flower buds are forming and swelling in the weeks before the main flush opens
When a group 3 clematis has been cut hard and is rebuilding its whole top from the base
When clematis grows in a container or a narrow bed at the foot of a wall, where soil dries and drains fast

A clematis that will not flower is more often a pruning-group or light problem than a feeding one — find out which group yours is before cutting or feeding harder. Keep mulch and fertilizer off the base of the stems, and water deeply at the root area rather than splashing the foliage.

Results you can see

Feeds foliage for deeper color and a brighter, more lively look.

Encourages fresh leaf and stem growth for a fuller, thriving plant.

Supports healthy, resilient roots that absorb nutrients more effectively.

Works for clematis varieties

Jackmanii
Nelly Moser
Sweet Autumn Clematis
The President
Henryi
Niobe
Ville De Lyon
Clematis Montana
Clematis

Label facts

NPK 3-3.6-5.1 with 2.1% calcium and 0.75% magnesium, plus iron, manganese, zinc, boron and copper.

Derived from kelp (ascophyllum nodosum), potassium phosphate, potassium nitrate, calcium nitrate, magnesium nitrate, boric acid, copper sulfate, ferric sulfate, manganese sulfate, zinc sulfate.

One 8 oz bottle makes 8 gallons of feed at 2 Tbs per gallon — the 32 oz makes 32.

Store cool and dark. Guaranteed 12 months from purchase; keeps up to 2 years.

How to care for clematis

Light

Six or more hours of sun on your vine, with the root zone kept shaded. Mulch, a low shrub or a flat stone over the roots does the job.

Water

Deep, steady moisture: about an inch of water a week and more in hot spells. Water at the base of your clematis so the foliage stays dry.

Soil

Rich, well drained soil with plenty of compost, near neutral at pH 6.5 to 7.0. Set the crown two to three inches below the soil surface at planting.

Feeding

Feed Clematis Fertilizer every two to four weeks from the moment growth starts in spring until the last flowers fade, then stop while your vine rests over winter.

Pruning

The group matters. Spring bloomers such as montana are trimmed right after flowering, while summer bloomers like Jackmanii are cut back to about a foot in late winter.

Bloom

Young plants often flower lightly for a year or two while the roots establish. Removing spent flowers on many varieties brings a second, smaller flush later in the season.

Frequently asked questions

Why does my clematis have lots of leaves and few flowers?

Usually too much nitrogen or not enough sun. Nitrogen drives leaf growth, so a lawn feed drifting into the bed or a nitrogen-heavy all-purpose fertilizer pushes vine at the expense of buds. Clematis Fertilizer is a bloom-focused feed, built to support flowering rather than more foliage. Pair it with the conditions your clematis wants: tops in sun, roots cool and shaded under mulch, and feeding at the recommended dilution through the growing season.

How often should I feed my clematis?

Every 1–2 weeks in spring and summer while your vine is actively growing, then every 4 weeks in fall and winter. Clematis Fertilizer is a liquid, so it mixes into the water you already give your clematis and feeding never becomes a separate task. Clematis put on a great deal of growth and bloom in a short window, so steady feeding through that stretch matters more than any single application.

Should I feed while it is flowering?

Ease off during the heaviest flush and resume once those first flowers fade. Clematis Fertilizer does its work between flushes: that’s when your vine is building the next set of buds, and bloom-focused feeding at that stage helps repeat bloomers like Jackmanii and Ville de Lyon set a second round. For once-flowering types such as montana, feeding after bloom supports the growth that carries next year’s flowers.

Can I use it on potted and in-ground plants?

Yes. Clematis Fertilizer works at the same dilution in both situations; only the method changes. Use a watering can for containers and small beds, and a hose-end sprayer set to the recommended rate for larger in-ground plants or a long run of vine. Potted clematis need the routine most, since containers lose nutrients with every watering and the roots have nowhere else to look.

Will this burn my plants?

Clematis Fertilizer is a dilute liquid feed, and dilution is what matters here. Fertilizer burn happens when concentrated salts sit against the roots: too much product in too little water, or granules piled at the base of a plant. Mixed at the recommended dilution and applied every 1–2 weeks, the nutrients arrive in solution at a strength the roots take up as they water. Keep to that mix and water it in with a normal watering; if you ever mix too strong, flush the root zone with plain water.

When will I see results?

Greener leaves and stronger new growth usually show within two to four weeks of consistent feeding. Flowering follows your clematis's own calendar, so the bloom response from Clematis Fertilizer builds over the season: a fuller first flush, and on repeat bloomers, a stronger second round once feeding continues between flushes. A vine that has been hungry for a while keeps improving through the following year.

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