Capsicum Frutescens Seeds Growing dahlias from seed is another way to grow dahlias. I saved seed from my formal decorative and informal decorative dahlias last fall. I usually start my dahlia seed around 4 to Angel Sar 22 in. Stackable Moss Poles for Climbing Plants Monstera, Large Coir Plant Support Stakes for Patio Garden (4 Pack) UUZN7284 DreamPatio Garden Grove 1 Piece Fiberstone Planter 18x18x25 DottedWhite Bleeding Hearts False Sunflower Sooner Plant Farm