🍆 Sowing Aubergine Seeds: Potting On Explained
Potting on is a crucial stage when growing aubergines from seed. Done at the right time, it encourages strong root growth and steady development. Done too early or too late, it can stall plants and reduce their final size and yield.
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This guide explains when and how to pot on aubergine seedlings, and how to avoid the most common mistakes.
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Choose good-quality seeds from a reliable supplier to improve germination rates and produce stronger, more productive plants, especially important with heat-loving crops like aubergines.
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Fine, low-nutrient seed compost provides the right balance of moisture and drainage, helping aubergine seeds germinate evenly without rotting.
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A propagator helps maintain consistent warmth and humidity, which is crucial for aubergine seed germination, particularly in late winter and early spring.
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Using seed trays or module pots keeps seedlings organised, improves drainage, and makes potting on easier with minimal root disturbance.
🌱 What Does “Potting On” Mean?
Potting on means moving seedlings from their original seed container into a slightly larger pot. This gives roots more space to grow and access to fresh compost.
It’s a gradual process, not a single jump into a large container.
📅 When Should You Pot On Aubergine Seedlings?
Aubergine seedlings are ready to pot on when:
- They have two to three true leaves
- Roots are visible at the drainage holes
- Growth has slowed due to limited space
Potting on too early can shock seedlings, while waiting too long causes root restriction.
🪴 Choosing the Right Pot Size
Increase pot size gradually:
- Start in small pots or modules
- Pot on to 9–10cm pots first
- Move to larger pots as plants grow
Avoid planting into very large pots too soon, as compost stays colder and wetter.
🌱 How to Pot On Aubergine Seedlings
- Water seedlings lightly before potting on
- Fill new pots with general-purpose compost
- Gently remove seedlings, handling leaves not stems
- Plant at the same depth as before
- Firm compost lightly around roots
- Water gently to settle compost
Take care not to damage delicate roots.
🌡️ Aftercare Following Potting On
After potting on:
- Keep plants warm
- Provide strong light
- Avoid overwatering
- Allow roots to establish before feeding
Plants may pause briefly, then resume growth.
🚫 Common Potting-On Mistakes
- Potting on too early
- Letting seedlings become root-bound
- Using cold compost
- Burying stems deeper than before
Avoiding these mistakes helps maintain steady growth.
🌿 How Potting On Affects Final Plant Size
Correct potting on:
- Builds a strong root system
- Supports larger plants
- Leads to better flowering and fruiting
Root-restricted plants rarely reach full potential.
🧠 Key Takeaway
Potting on aubergine seedlings at the right time is essential for healthy growth. Wait until plants have two to three true leaves, increase pot size gradually, and handle seedlings carefully.
Good potting on lays the groundwork for strong plants and better harvests.