Q.I Just Got Some Ageratum Blue Planet Seeds But They Didn’t Come With Directions When To Plant Them? Outdoors.
I usually sprinkle them on top of the soil but the weather has been so different this year I don’t know when to plant. I live in Southern Maryland not terribly far from the Chesapeake Bay, the Patuxent River and the Potomac River. Our weather tends to move up from the Northern Neck of Virginia. How much sun does this variety require?
Certified GKH Gardening Expert
It is recommended to start them indoors about 6 to 8 weeks before the last frost date. Barely press the seeds into the soil surface. Light is required for germination. They should emerge in 7 to 10 days at 70 degrees F. When 2 inches tall, thin seedlings. Transplant outside after the last frost date in full sun to part shade in well-drained soil. This variety does not need pinching. Here are general growing tips:
https://www.gardeningknowhow.com/ornamental/flowers/ageratum/ageratum-from-seed.htm
https://www.gardeningknowhow.com/ornamental/flowers/ageratum/growing-ageratum-flowers.htm
