Fertilising guide

How to fertilise Trailing Lantana (Lantana montevidensis)— schedule & NPK

Also called Trailing Lantana, Weeping Lantana, Purple Trailing Lantana, Creeping Lantana.

More about trailing lantana

About Trailing Lantana

Lantana montevidensis · also called Trailing Lantana, Weeping Lantana · flowering

Native to South America, Trailing Lantana is a low, spreading, woody perennial or shrub prized for its lavender-purple flower clusters that bloom from spring through autumn. It thrives in full sun with well-drained soil and is highly drought-tolerant once established, making it an excellent choice for slopes, containers, and hanging baskets. The single most important care rule is to avoid overwatering, as root rot quickly occurs in poorly drained or constantly wet soil. Toxic to cats, dogs, and horses.

Growth habit: Low, trailing to mounding woody perennial, spreading by vine-like stems

What fertiliser trailing lantana actually wants — and why

Trailing Lantana 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 trailing lantana: 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 trailing lantana, 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 trailing lantana:

Apply a balanced granular fertiliser once in spring; avoid high-nitrogen feeds, which promote foliage at the expense of flowers. In practice: no routine feeding at all for trailing lantana — 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 trailing lantana 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 trailing lantana

None is the correct answer for trailing lantana. 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 trailing lantana first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the trailing lantana watering schedule.

Signs you are over-feeding trailing lantana

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

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 trailing lantana

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 trailing lantana care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

If trailing lantana 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 trailing lantana

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 trailing lantana.

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 trailing lantana — frequently asked questions

What fertiliser does trailing lantana 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. Trailing Lantana 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 trailing lantana?

Apply a balanced granular fertiliser once in spring; avoid high-nitrogen feeds, which promote foliage at the expense of flowers. Apply a balanced granular fertiliser once in spring; avoid high-nitrogen feeds, which promote foliage at the expense of flowers. In practice: no routine feeding at all for trailing lantana — at most a thin compost mulch for soil structure, never a flowering or nitrogen feed.

What strength of feed for trailing lantana?