Kent's growing season is noticeably longer than most of the UK. Mild winters mean lawns here can stay green and growing well into November, and start again as early as late February in a warm year. That longer season is good news, but it also means the grass works harder and uses up more nutrients over time. A lawn that looked fine in spring can look tired and patchy by mid-summer if it hasn't had anything to feed on.
Feeding is not complicated, but the timing and the formula matter more than most people realise.
Before you start
- Wear gloves when handling granular or liquid fertiliser, wash your hands thoroughly after application.
- Keep children and pets off the lawn until granules have dissolved (usually after a good rain or watering) or until liquid feed has dried, typically 24 to 48 hours.
- Store fertiliser in a dry place away from water sources, rivers and drains.
- Read the packet rate carefully, too much does real damage.
Step 1: Choose the right fertiliser
There are two types of lawn feed, and using the wrong one at the wrong time is the most common mistake:
- Spring and summer formula (high nitrogen): pushes leafy green growth. Use from late March through to the end of August.
- Autumn formula (low or zero nitrogen, high phosphorus and potassium): strengthens roots and hardens the grass for winter. Use from September, and stop by October.
Applying a high-nitrogen spring feed in autumn encourages exactly the soft, sappy growth that a cold snap or frost will damage. It's the one rule worth remembering above everything else.
Step 2: Wait for the right conditions
The grass needs to be actively growing before feeding makes sense. In Sandwich and Deal, that usually means late March, though a mild February can bring it forward by a few weeks. Check for visible growth before you apply anything.
- Ground should be moist but not waterlogged.
- Avoid feeding in a drought, a frost, or during very hot weather.
- Aim for a morning when rain is expected in the next day or two, ideal for granular feeds.
- Grass should have been mowed in the last week or so before you feed it.
Step 3: Measure the lawn and calculate the dose
Work out the area in square metres (length times width for a simple rectangle, or break an irregular lawn into sections). Weigh or measure the fertiliser according to the rate on the packet. A spreader makes this easier and more even than scattering by hand, but a watering can works fine for small lawns with liquid feed.
Step 4: Apply in two passes, at right angles
For granular feeds, split the dose in half. Walk the lawn applying the first half in one direction, then walk it again at right angles applying the second half. This gives much more even coverage and avoids the dark-green stripes that come from over-applying on overlapping runs.
For liquid feeds, use a calibrated watering can or a knapsack sprayer. Keep the nozzle at a consistent height and walk at a steady pace for even application.
Step 5: Water in if no rain is coming
Granular fertiliser that sits on the surface of dry grass can scorch it within 24 hours. If no rain is forecast in the next day or two, water gently with a sprinkler or hose to dissolve the granules and take the feed down to the root zone where it can do some good.
Around Sandwich Bay and the Deal coast, sea-facing gardens can dry out faster than sheltered gardens inland, so watering in is more often necessary here than it might be elsewhere in East Kent.
Step 6: Repeat on schedule through the season
Most Kent lawns benefit from three to four feeds per year:
- Late March or early April: the first spring feed to kick-start growth.
- Late May or June: a second spring or early summer feed if the grass needs a boost.
- July or August: an optional summer feed, only if the lawn is growing well and getting regular water.
- September: the autumn feed, switched to the low-nitrogen formula.
Stop by October. Feeding later than this encourages soft growth that will struggle through a Kent winter, even a mild one.
When to stop and call us
If your lawn has persistent yellow or pale patches that don't respond to regular feeding, the problem is likely not nutrition. It could be compacted soil preventing roots from reaching water and feed, a drainage issue, a soil pH problem, or something sitting beneath the surface. These need a closer look rather than more fertiliser. Give us a call and we'll come and take a look.
A video worth watching
Shaun at the LawnRight channel on YouTube (South Yorkshire, UK) posted a thorough guide to applying granular and liquid fertilisers correctly, covering the double-pass method and how to avoid scorching. His channel focuses on practical, no-nonsense lawn care for UK gardens and has over 55,000 subscribers. You can watch "Feed Your Lawn Right!" on YouTube for a detailed demonstration.
Prefer we handle it?
We can include lawn feeding as part of your regular mowing visits across Sandwich, Deal, Worth, Ash, Woodnesborough, Eastry and Sandwich Bay. Get in touch and we'll talk through what would suit your lawn.