The seeds I planted from this years Dahlias are starting to sprot under lights.
My wife and I have been breeding new dahlias for over 10 years now. Here in Oregon we start our seeds on April Fools day, April 1st. They grow really fast and the average plant is over 4 feet tall by August 15th. We put the plants into the ground about May 15th. We grow about 1000 to 1500 each year.