- Dahlias can be started indoors in individual pots with damp peat moss and vermiculite. Care must be taken in transplanting them outdoors.
- Plant dahlias outdoors after all danger of frost has passed.
- Choose a sunny site with well-drained, sandy soil.
- Dig soil to a depth of 12″. Amend soil with peat moss or compost.
- Replace about half the soil, then place tubers flat and cover with remaining soil.
- Space tubers 12-36″ apart depending on variety.
- Water after planting and not again until shoots appear.
- As plants grow, increase watering. Fertilize sparingly.
- Pinch and disbud dahlias for later and larger flowers.
- Buds tend to grow in threes; two-sided ones should carefully be pinched to develop the central bloom. This is especially important with border
or pot plant dahlias.
- If the plants are not pinched back, they will not retain their low, compact size and will need staked
- In areas with winter freeze, carefully dig the tubers in fall after the first frost kills the foliage.
- Cut the stalk approximately 3″ above the tuber.
- Allow tubers to dry thoroughly. Pack them carefully in dry sand, peat
moss, or sawdust and store in a cool (40-45°F) dry place. Leave 1″ of stalk attached to each tuber which must have an eye or bud to bloom.