Petunias from Seed: Dust-Fine Seeds, a Sea of Colour
1 min read By Екипът на Seeds
Petunia seeds are microscopic. How to sow them properly and grow dense, bushy plants.
Early sowing
Petunias are sown in January–February — it takes about 10–12 weeks until flowering. The seeds are like dust: mix them with a little dry sand and scatter them over the surface of moist compost. Do not cover them — they germinate in light.
The first weeks
Cover with a clear lid and keep at 22–24 °C. Germination takes 7–14 days. Ventilate every day and water from below or with a mister so you do not wash the seedlings away.
Extra light in February makes the difference between leggy and sturdy seedlings.
Pricking out and pinching
Prick out at 2–3 true leaves. When the plants have 5–6 leaves, pinch out the tip — they will branch.
Balconies and window boxes
- Full sun.
- Water every day in hot weather.
- Feed with a flowering-plant fertiliser every 10–14 days.
Photo: Anik Sarker, CC BY-SA 4.0, Wikimedia Commons
