Check out this list of symptoms, causes and solutions for common seed germination issues. Keep in mind that your seeds have a built-in drive to survive so even if you can't give them optimal help, they will do their best to make it. So help them along by following these tips.
Issue 1: Collapsed seedlings and rotten roots or soil-level stems
Possibly caused by: Damping off
How to fix: Clean seed trays with a part bleach solution. Use sterilized seeding soil mix and don't overcrowd your seeds.
Issue 2: Curling leaves
Possibly caused by: Too much fertilizer
How to fix: Reduce amount of fertilizer feed or replant your seeds using fresh mix
Issue 3: Yellow lower leaves
Possibly caused by: Too much fertilizer or deficient in magnesium
How to fix: Adjust fertilizer feeding or repot the plan using a fresh mix
Issue 4: Long weak stems or large gaps between leaves on stem
Possibly caused by: Not enough light or plant grown in a very hot environment or overcrowded
How to fix: Give plants more light through exposure or increased grow light duration, lower temperature, take out some seedlings to thin out cluster
Issue 5: Soil surface shows green mould
Possibly caused by: Too much water due to bad drainage, little air circulating, too much fertilizer
How to fix: Place small amounts of ground charcoal into the soil surface to absorb excess moisture
Issue 6: Leaves have gone pale
Possibly caused by: deficient nitrogen
How to fix: Feed your plants nitrogen heavy fertilizer
Issue 7: Reddish purple leaf underside
Possibly caused by: Not enough phosphorus
How to fix: Feed more phosphorus to your plants
Issue 8: Leaf edges turn brown or bronze
Possibly caused by: too much water or not enough potassium
How to fix: reduce watering, feed with fertilizer with a high potassium profile
Is your garden centre or nursery already listed on the Garden Centre Guide? You can get a free listing which includes a link to your website. You can also publish promotions, job vacancies and opening times on your own page. It's all for free so don't wait and sign up today!
Write a review of a local garden centre near you and win $25! We give away a prize each month. The more reviews you write the more times you'll enter the draw! Share your personal shopping experience at your garden centre with our other visitors so they can decide to visit your favourite garden centre - or another retailer if your review isn't positive at all. Don't wait and write your review: find your local garden centre on the Garden Centre Guide and add your review!