Remove old flower heads to stop seeds from developing, this encourages more buds
Surface sow into ordinary potting compost. Do not exclude lightSoil temperature should be kept higher than 18°C / 64°F to ensure good germination.
By our calculations*, you should look at sowing Multiflora petunia about 77 days before your last frost date .
Pot on as soon as the seedlings are large enough to handle, and grow on under protection. Pot on into tots or baskets and continue under protection until all danger of frost has past. Gradually allow the plants to be exposed to outside conditions over a period of 10 to 15 days before placing outside in their final positionEnsure that temperatures are mild (minimum night temperatures should be around 12°C / 54°F) and all chance of frost has passed before planting out, as Multiflora petunia is a tender plant.
Flowers are best enjoyed on the plant
Many plants that are sold are hybrids and do not come true from seed. But it is possible to over winter your favourite under protection or strike cuttings in the late summer to grow under protection
These estimates for how long Multiflora petunia takes to sprout, grow and harvest are from real observations from real gardeners, right around the world.
Average 25 days | Min 5 days | Max 72 days (4)
Average days | Min days | Max days (0)
Average 11 days | Min 1 days | Max 20 days (3)
Our when to plant Multiflora petunia estimates are relative to your last frost date.