Originally published 13 May 2025
Whether you're growing cherry tomatoes in patio pots or rows of courgettes and beans on an allotment, one thing holds true: your plants need the right fertiliser to perform. Good feeding is what turns healthy-looking plants into a genuinely productive harvest.
At Devonia London we know gardeners want feeding that's effective, convenient and suited to fruiting crops — which is exactly why our Tomato & Vegetable Fertiliser Sticks are such a popular choice for the vegetable patch and greenhouse alike.
Why Feed Tomatoes and Vegetables at All?
Vegetable plants are heavy feeders, needing a steady nutrient supply to fuel leaf growth, flowering, fruit set and overall health. Compost and well-prepared soil give a good base, but they rarely meet the full demand once the growing season really gets going.
That's where a targeted fertiliser comes in — providing nitrogen for leafy growth, phosphorus for roots and flowering, and potassium for fruit development and disease resistance. Without it, plants can stall, yellow, and under-deliver at harvest time.
Why We Recommend Fertiliser Sticks
Our sticks are formulated to support the whole growing cycle of fruiting crops, whether that's tomatoes, cucumbers, peppers or beans — releasing nutrients slowly and consistently right at the root zone.
• Pre-measured and simple — no mixing or measuring, just insert into the soil
• Slow-release — a steady feed that avoids the risk of overfeeding or root burn
• Up to 60 days per stick — less time feeding, more time in the garden
• Greenhouse or outdoor use — versatile across growing environments
Because they feed gradually and directly at the roots, they're a great option for beginners and busy growers alike.
When to Fertilise
Get the timing right and you'll avoid two common pitfalls: feeding too early (lush leaves, no flowers) or too late (limited fruit). A simple guide:
• Planting stage: work a balanced fertiliser into the soil, or place a stick in as you transplant seedlings, to give young plants a strong start
• Flowering stage: plants need extra potassium as soon as flowers appear, so this is a good moment for a second application, especially for heavy feeders like tomatoes
• Fruiting stage: continue feeding every 6–8 weeks depending on the crop — tomatoes in particular benefit from consistent feeding to avoid issues like blossom end rot
Using the Sticks: Three Simple Steps
• Insert the stick 5–7cm from the base of the plant, pushed fully into the soil.
• Water well to start the slow-release process.
• Repeat every 60 days through the growing season, or whenever the plant shows signs of needing a boost.
Because the feed releases gradually, there's no risk of it washing away with watering or rain, which is a common problem with liquid feeds.
Sticks vs Liquid or Granular Feed
• No mess or waste — no risk of splashing onto leaves or overfeeding
• Root-targeted — nutrients go exactly where they're needed
• Weather-resistant — won't wash away in the rain
• Ideal for pots and raised beds — especially useful in small or controlled growing spaces
They're also a more eco-conscious choice, cutting down on run-off and letting you fertilise with real precision. A well-fed plant is a productive plant. With Devonia's Tomato & Vegetable Fertiliser Sticks, getting there has never been easier — and it's worth taking a look at our Border and Bedding Plants Fertiliser Sticks too, for the rest of the garden.
