Cut flowers
Dahlia Planting Calculator
Dahlia spp.
Everything you need to plan Dahlia: recommended spacing, how many plants and seeds you'll need, when to start, and when to expect blooms. Defaults come from grower references and every value is editable.
At a glance
- Recommended spacing
- 12″
- Range 12–18″
- Planting pattern
- Two rows per bed
- Time to first production
- Varies by variety
- Enter your supplier's maturity value to estimate
- Succession planting
- Not typical
- Start indoors
- Direct sow / not typical
- Production pattern
- Cut-and-come-again
- Pinch
Plan your Dahlia beds
Prefilled with Dahlia's recommended spacing. Adjust your bed size to get plant counts, seeds to start, and tray requirements.
Loads recommended spacing and planting pattern. You can override anything.
ft
ft
Contextual only for two-row.
in
Default 12″Range 12–18″
Your plan
100
Total plants
50 per row × 2 rows
- Tubers to buy (10% buffer)
- 111
Dahlia is typically grown from tubers, not seed trays, so tray counts are hidden.
More Dahlia planning
Planning notes
- Corralling
- Pinching
Cut-and-come-again. A planting keeps producing new stems over a relatively long harvest period when it is picked regularly, so successive plantings are usually spaced farther apart.
- Pinching is commonly used in this production system.
- Corralling for structural support is commonly used.
- First-production timing varies by cultivar and growing system, so enter the maturity value from your seed supplier to estimate production.