Fertiliser sticks vs liquid feed

Updated: October 2026

The choice between fertiliser sticks vs liquid feed becomes clear when you ask how often you want to make a feeding decision.

The choice between fertiliser sticks vs liquid feed becomes clear when you ask how often you want to make a feeding decision. A stick is inserted once and may remain active for a seller-stated 30 days to 12 weeks; a liquid is diluted and applied again at a later watering. That makes sticks convenient, while liquid is easier to pause, reduce or change. RHS guidance names liquid feeding as the normal approach for containers and houseplants, but that does not make every stick unsuitable. Use our fertiliser sticks comparison after deciding which level of control suits your pots, not before.

Our top picks

Badge	Product	Stated duration	Pot-size dose	Stated analysis	Note	Price	Offer
Best overall	Jobe's Organics Jobe's fertiliser spikes for fern and palm	2 months	No pot-size dose	16:2:6	8.1	about £6.99	View offer
Alternative	Generic Devonia tomato and vegetable fertiliser sticks	Up to 12 weeks	No pot-size dose	Not printed	3.6	about £7.99	View offer
Alternative	Substral Substral Naturen fertiliser sticks for herbs	Up to 2 months	1–5 by pot size	Not printed	6.0	about £12.40	View offer

Best overall

Jobe's Organics Jobe's fertiliser spikes for fern and palm

8.1/10about £6.99

View offer

Alternative

Generic Devonia tomato and vegetable fertiliser sticks

3.6/10about £7.99

View offer

Alternative

Substral Substral Naturen fertiliser sticks for herbs

6.0/10about £12.40

View offer

On this page

1.What each feeding format is designed to do
2.Convenience from sticks, control from liquid
3.Do not run both systems at once
4.Tomatoes and other changing crop needs

What each feeding format is designed to do

Fertiliser sticks place a pre-formed dose in the compost. Moisture helps the product release nutrients over time, and the pack supplies a replacement interval. On the shelf compared here, Go Garden claims up to 30 days, several products claim around two months and three Devonia listings claim up to 12 weeks. Liquid feed gives you a new decision each time. You measure or dilute it according to the label, apply it to moist compost and then decide at a later watering whether to repeat. RHS guidance commonly describes liquid feeding for containers after the initial compost feed has run out, and for many houseplants during active growth from March to October. Neither format works independently of good watering and suitable roots. Fresh compost may already contain feed, so adding either product too soon can stack nutrient sources. If you have already chosen sticks, the how to use fertiliser sticks guide covers moist compost, placement and reminders.

Convenience from sticks, control from liquid

Choose sticks when the plant has stable needs, the compost is moist and open enough for safe insertion, and you are likely to forget repeated liquid doses. Substral Naturen, for example, states one to five sticks by pot size and a two-month repeat interval. The listing does not print NPK figures. The limitation is that a stick is designed to keep releasing after you bury it. If winter light drops, the plant stops growing or leaves react badly, you cannot simply cancel what has already been inserted. Choose liquid when you want to observe the plant between feeds, adjust for the season or switch formulations as growth changes. If a houseplant slows in autumn, you can skip the next dose. Decide how much control you need first, then compare transparent products within the chosen format using the fertiliser sticks buying guide.

Testsieger

Jobe's Organics Jobe's fertiliser spikes for fern and palm

8.1/10about £6.99

View offer

Do not run both systems at once

A common mistake is to insert a fresh stick and continue the old liquid-feed calendar. That combines two nutrient sources while hiding the total dose. Unless the exact labels provide a combined programme, choose one method and record when you started it. Dry compost is a stop sign for both formats. Water normally first and allow the root ball to become evenly moist. With a stick, never force the product into a dense mat of roots; one stored UK Jobe's review reports a pot-bound cycad dying after use. If a plant deteriorates after feeding, stop optional future applications and check light, moisture, drainage, pests and root condition. A liquid schedule is easy to suspend. A stick is less reversible, and digging through roots to retrieve it may create more damage.

Tomatoes and other changing crop needs

Tomatoes show why control can matter more than convenience. RHS guidance recommends a high-potassium liquid feed once the first fruits start to swell. The Devonia tomato-and-vegetable sticks in this set name the right crop and claim up to 12 weeks, but the stored listing prints no nutrient analysis, so it cannot be confirmed as a high-potassium feed. A stable fern or palm during active growth may suit a correctly dosed stick because its feeding job changes less abruptly. Jobe's names ferns and palms, prints a 16:2:6 mixing field and claims two months, though it still lacks a pot-size dose in the stored bullets. For a houseplant in variable winter light, liquid remains easier to reduce. The dedicated houseplant fertiliser sticks guide helps decide whether to feed at all.

Common questions

Are fertiliser sticks better than liquid feed?

Not universally. Sticks are better for convenience when a suitable plant has stable needs and the pack gives a clear dose. Liquid is better when you want to adjust or stop at the next watering. RHS commonly names liquid as the routine format for containers and houseplants.

When should I choose a fertiliser stick?

Choose a stick when the compost is moist, roots leave room for safe insertion, the plant is actively growing and the exact product matches the job. You should also have a trustworthy dose and be comfortable with the stated release period continuing for several weeks.

When is liquid feed the better option?

Liquid is preferable when needs change with season or crop stage, when you are diagnosing a stressed plant, or when you want to pause quickly. It also avoids pushing a rigid object into a densely rooted pot, although you must still dilute correctly and feed moist compost.

Can I use a fertiliser stick and liquid feed together?

Do not combine them by default. A new stick plus routine liquid feed makes the total nutrient dose difficult to assess, especially if fresh compost is also feeding the plant. Use a combined programme only when the exact product instructions explicitly support it.

Which format should I use for tomatoes?

Once tomato fruits begin to swell, RHS guidance points to high-potassium liquid feed. A stick can be considered only if its physical label clearly shows an appropriate analysis and crop-stage directions. The Devonia tomato listing stored here gives no analysis, so its title alone is not enough.

Do fertiliser sticks avoid nutrient wash-away?

Some listings make no-wash-away or mess-free claims, but this comparison contains no runoff trial. Release still depends on moisture, and overwatering can affect nutrients in a container. Treat the claim as seller wording rather than evidence that sticks eliminate loss.

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