Petunias like a moist, well-drained growing medium and the seeds don’t like to be covered in too much soil, so we took the seed cell tray out of the greenhouse and used the base for sowing.
#Mini petunias seeds how to#
How to Grow Petunias in a Mini Greenhouse Position petunias about 300mm apart and keep the area weed-free. To plant them out in the garden, choose a spot with good drainage that gets plenty of light but not harsh afternoon sun and has good airflow. The seedlings can be put outside on warm days to acclimatise but make sure they’re protected from direct sun and wind, bringing them back inside at night. Lift them carefully out of the growing medium with a stick, being careful not to disturb the roots or let them dry out. Highlights Seed Type: Flower Suitable For: Indoor, Outdoor Organic Plant Seed Seed For: Exotic Petunia Mixed Flower Flowering Plant Quantity: 21 per. When the seedlings emerge you can remove the mini greenhouse cover and let the growing medium dry out slightly between waterings.Īfter about 14 to 21 days the seedlings can be transplanted to pots or a windowbox.
Sow Au-Sp in warm areas, Sp-Su in cool areas. Taking petunias from germination to garden bed takes about six weeks. Note petunia seeds are very small and calculated by weight for accuracy. Once your seeds are ready to germinate it’s time to plant them. TIP Some greenhouses are called propagation units and have a built-in heater to regulate the soil temperature. Replace the lid and position the mini greenhouse in a spot with lots of light but no direct sun. Sow the seeds in the tray and use a spray bottle to mist the potting mix with water, creating humidity. This features a tray with a lid that has vents so you can control airflow.įor successful germination the soil temperature needs to be 16☌ which is easily checked with a thermometer. To provide the required warmth, shelter and moisture the easiest option is to use a mini greenhouse. You can nurture the seedlings by growing them indoors until they’re ready to be planted out.
Petunias are popular for adding a splash of winter colour but if you sow them in the garden, frost can kill seedlings as they emerge. Get planting for blooms you can enjoy in the ground, in pots and out, or as cut flowers. With just a little planning you can enjoy the sight and smell of flowers during every month of the year. => Keep the garden in leaf and bloom all year with our seasonal guides on what to grow and when to sow.
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