Fertilising guide

How to fertilise Five-leaf akebia (Akebia x pentaphylla)— schedule & NPK

Also called Five-leaf akebia, Chocolate vine.

More about five-leaf akebia

About Five-leaf akebia

Akebia x pentaphylla · also called Five-leaf akebia, Chocolate vine · flowering

Five-leaf akebia is a vigorous, semi-evergreen twining climber — a natural hybrid of Akebia quinata and A. trifoliata — bearing racemes of lightly vanilla-scented reddish-purple flowers in spring. It adapts to sun or shade in almost any well-drained soil and is very hardy. Rarely fruits without cross-pollination. Toxicity is not established.

Growth habit: Vigorous twining climber, semi-evergreen

What fertiliser five-leaf akebia actually wants — and why

Five-leaf akebia flowers best on poor soil — feed it and you get a lush leafy plant with very few blooms, the exact opposite of what you want.

Little or nothing. Rich, especially nitrogen-rich, soil pushes foliage at the expense of flowers in this plant — lean ground is the technique, not a deficiency.

For the language behind the three numbers on the bottle — what nitrogen, phosphorus and potassium each do — see the NPK ratio explained entry. The short version for five-leaf akebia: match the feed to the job the plant is doing right now, not to a generic “plant food” on the shelf.

How often to feed five-leaf akebia, and which months

Feeding only earns its keep while the plant is in active growth and can use the nutrients — pour feed into a dormant or low-light plant and it simply builds up as root-burning salt. For five-leaf akebia:

Apply a balanced slow-release fertiliser or a top-dressing of well-rotted compost in early spring. Feed sparingly — very fertile conditions promote excessive leafy growth at the expense of flowers and fruit. In practice: no routine feeding at all for five-leaf akebia — at most a thin compost mulch for soil structure, never a flowering or nitrogen feed.

The dormant-season rule matters more than the exact interval: skip feeding entirely when five-leaf akebia is resting. For the wider context on indoor feeding rhythms across the seasons, the houseplant fertiliser schedule walks through the year month by month.

What strength to mix for five-leaf akebia

None is the correct answer for five-leaf akebia. The flower-versus-foliage trade-off is the whole point: hold back and you get the display.

Feeding always goes onto already-damp soil, never dry roots — water five-leaf akebia first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the five-leaf akebia watering schedule.

Signs you are over-feeding five-leaf akebia

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for five-leaf akebia:

Abundant leafy growth and very few flowers (the classic over-rich symptom).
Soft, floppy stems and a sprawling, leafy habit.
Scorched edges and salt crust if it has been fed in a container.

Signs you are under-feeding five-leaf akebia

Effectively never an issue — these plants flower on poverty.
Only on genuinely dead soil: weak, thin growth and few blooms.
A short-lived plant in completely spent container compost.

If the symptoms point at watering, light or roots rather than nutrition, the full five-leaf akebia care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

If five-leaf akebia has accidentally been fed and is all leaf, a plain-water flush plus a move to leaner soil resets it; otherwise no flushing is needed because you are not feeding it.

Organic vs synthetic feeds for five-leaf akebia

Organic options

A thin compost mulch for soil structure is the absolute most; mostly, give it nothing. UK/US: leave it lean — no manure, no liquid feed. Poor soil is the active ingredient here.

Synthetic / liquid feeds

None. Synthetic feeds, particularly anything with appreciable nitrogen, directly suppress flowering in five-leaf akebia.

Brand names are examples, not endorsements, and UK and US ranges differ — check the label’s own NPK and dilution rate, since formulations change.

Fertilising five-leaf akebia — frequently asked questions

What fertiliser does five-leaf akebia need?

Little or nothing. Rich, especially nitrogen-rich, soil pushes foliage at the expense of flowers in this plant — lean ground is the technique, not a deficiency. Five-leaf akebia flowers best on poor soil — feed it and you get a lush leafy plant with very few blooms, the exact opposite of what you want.

How often should I feed five-leaf akebia?

Apply a balanced slow-release fertiliser or a top-dressing of well-rotted compost in early spring. Feed sparingly — very fertile conditions promote excessive leafy growth at the expense of flowers and fruit. Apply a balanced slow-release fertiliser or a top-dressing of well-rotted compost in early spring. Feed sparingly — very fertile conditions promote excessive leafy growth at the expense of flowers and fruit. In practice: no routine feeding at all for five-leaf akebia — at most a thin compost mulch for soil structure, never a flowering or nitrogen feed.

What strength of feed for five-leaf akebia?