Fertilizer for Dill: NPK Guide and Application Rates
Dill is a fast-growing, cool-season herb that goes to seed quickly in warm weather, much like cilantro. It has a taproot that resents transplanting, so direct sowing is preferred. Light fertilization is sufficient. For dill weed (leaves), use higher nitrogen to delay bolting. For dill seed, reduce nitrogen once flower heads form.
Quick Reference
What NPK Ratio is Best for Dill?
The recommended NPK ratio for dill is 5-10-10. The phosphorus-heavy 5-10-10 ratio supports strong root systems and flower/fruit production in dill.
Dill NPK needs shift at each growth stage. Light balanced feed for seedlings during the Seedling phase, then allow flowering for dill seed harvest; reduce nitrogen once flowering begins.
NPK by Growth Stage for Dill
| Growth Stage | NPK Ratio | Notes |
|---|---|---|
| Seedling | 10N 10P 10K N 10% Nitrogen: leaf and stem growth P 10% Phosphorus: roots and flowers K 10% Potassium: health and disease resistance Learn more about NPK | Light balanced feed for seedlings |
| Vegetative | 10N 5P 5K N 10% Nitrogen: leaf and stem growth P 5% Phosphorus: roots and flowers K 5% Potassium: health and disease resistance Learn more about NPK | Moderate nitrogen for leaf (dill weed) production |
| Flowering | 5N 10P 10K N 5% Nitrogen: leaf and stem growth P 10% Phosphorus: roots and flowers K 10% Potassium: health and disease resistance Learn more about NPK | Allow flowering for dill seed harvest; reduce nitrogen |
| Fruiting | 0N 0P 0K N 0% Nitrogen: leaf and stem growth P 0% Phosphorus: roots and flowers K 0% Potassium: health and disease resistance Learn more about NPK | No feeding once seed heads form |
When Should You Fertilize Dill?
In zone 3, start fertilizing dill in May. In zone 10, begin as early as January. Apply every 4 weeks through the growing season.
Which Zones Can Grow Dill?
Dill grows in USDA zones 3 through 10, spanning a 8-zone range.
Fertilization Start by Zone
| Zone | Start Month |
|---|---|
| Zone 3 | May |
| Zone 4 | May |
| Zone 5 | April |
| Zone 6 | April |
| Zone 7 | March |
| Zone 8 | February |
| Zone 9 | February |
| Zone 10 | January |
What Are the Best Fertilizer Products for Dill?
Look for products with an NPK close to 5-10-10. Espoma Garden-tone is the most popular choice among home gardeners for dill.
- Espoma Garden-tone
- Neptune's Harvest Fish Fertilizer
- Dr. Earth Herb Fertilizer
Prices vary by retailer and region. Check current pricing before purchasing.
Container and Raised Bed Adjustments for Dill
Container dill needs deep pots (10+ inches for the taproot) and light monthly feeding with balanced liquid fertilizer
Common Fertilizing Mistakes with Dill
- Transplanting disturbs the taproot and causes bolting or stunted growth
- Over-fertilizing with nitrogen reduces essential oil concentration and flavor
- Planting in a single sowing and expecting a season-long supply; dill bolts within 8 weeks
Tips for Fertilizing Dill
- Direct sow dill rather than transplanting; the taproot is easily damaged by transplanting
- Succession sow every 3 weeks for continuous dill weed harvest
- Plant near tomatoes and cabbage; dill attracts beneficial predatory wasps
Organic Fertilizer Alternatives for Dill
Sources
Source:Clemson University ExtensionLast updated: