I planted my first ever Dahlia's this year but they were too tall for the boarder i put them in. Well next year i'm building a big boarder in my back garden but won't be ready for the start of next year to replant. Can i store dahlia tubers or do they have to be replanted every year?.
Also 2 kinds of dahlia's i planted this year had 1 or 2 flowers that didn't look like the other flowers, does this happen.
Odd Dahlia Sagitta flower
Dahlia Perfect Match
Odd Dahlia Perfect Match
Next spring, bring them out in to the warmth and light and plant in trays till shoots form. If you like, you can take cuttings at this point to increase your stock. The parent plants can then be potted on until it's safe to plant them out after all frosts in May.
This way you'll have time to make your new border to plant them out next year and, if it's well drained and not too exposed to cold and wet and you can mulch them, you can try leaving some dahlias in the ground in future years but take cuttings as insurance and keep young plants sheltered till their roots are strong.
"We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw