Garden Problems UK

On this page
  1. Pest Guides
  2. Disease & Growing Problem Guides

Pests, diseases, and growing problems are part of every UK gardener's life. Find the issue and fix it fast.

Pest Guides

🐌 Slugs & Snails

The UK's most damaging pest. Attacks seedlings and almost everything overnight.

Slugs & Snails Guide →

🐛 Aphids

Greenfly and blackfly weaken plants and spread virus diseases. Act early.

Aphids Guide →

🦋 Carrot Fly

Invisible larvae tunnel through carrot roots. Prevention is the only reliable fix.

Carrot Fly Guide →

🦋 Cabbage White Butterfly

Caterpillars strip brassica leaves to skeletons in days. Netting is the only defence.

Cabbage White Guide →

Disease & Growing Problem Guides

🍅 Blight

Late blight is the most destructive UK vegetable disease. Spreads rapidly in warm, wet weather.

Blight Guide →

🪲 Club Root

Deforms brassica roots and persists in soil 20+ years. Raise pH to manage.

Club Root Guide →

🌱 Poor Germination

Seeds not sprouting? Soil temp, moisture, depth, and seed age are the common culprits.

Poor Germination Guide →

🪪 Soil Problems

Compacted, waterlogged, or nutrient-poor soil limits every crop. Diagnose and fix.

Soil Problems Guide →

💧 Overwatering

Yellowing leaves and rot are often too much water, not too little. Learn the signs.

Overwatering Guide →

⚪ Powdery Mildew

A white, dusty coating on leaves that thrives in dry soil and humid air. Common on courgettes and squash.

Powdery Mildew Guide →

❓ Plants Not Growing

Stalled or stunted growth usually traces back to light, feed, water, or root problems.

Why Plants Aren't Growing →

Plan Smarter, Grow Better

Our UK Vegetable Garden Planner includes crop rotation guides and spacing charts to help you avoid problems before they start.

Get the UK Garden Planner →
Relevant next steps

Fix The Cause, Then Plan The Next Crop

Troubleshooting works best when you improve the growing conditions and record what changed for the next season.

Keep going

Gardening somewhere else?
Top tips for October
  • Plant garlic before hard frosts
  • Protect late salads with fleece
  • Store squash somewhere dry
  • Mulch empty beds
Free Tool
soilcommander.com/pages/garden-planner
1 · Shape
2 · Crops
3 · Conditions
4 · Plan
Choose your garden shape
🍅
Bed 1
Tomatoes
🍌
Bed 2
Legumes
🥦
Bed 3
Brassicas
🥕
Bed 4
Roots
🥥
Bed 5
Alliums
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Herbs & More

Free planning tool

Plan your veg garden before you dig a single inch

Sketch your exact plot shape, pick your UK crops, and get a spacing-accurate bed layout with companion pairings, a rotation plan and month-by-month sowing dates — every fact sourced from RHS and Garden Organic.

Garden Layout Planner Tool

Free to use. Nothing to install.

Plan the next step

Use the printable SoilCommander planner for your region to turn this guide into sowing dates, bed layouts and weekly garden tasks.

Get Planner