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Learn about Dill

Dill: Direct Sow or Potted Plant Herb

How to Sow and Plant

Direct Sow:

  • Sow outdoors in spring after danger of frost. In frost-free areas, sow from fall to early spring.

 

  • Sow in average soil in full sun.

 

  • Sow seeds thinly and cover with ¼ inch of fine soil. Seed needs light to germinate.

 

  • Firm lightly and keep evenly moist.

 

  • Seedlings emerge 10-21 days.

 

  • Thin to 12 inches apart when seedlings are 1-2 inches tall.

 

Planting Potted Plants in the Garden:

  • Select a location in full sun with good rich moist organic soil.

 

  • Prepare the bed by turning the soil under to a depth of 8 inches. Level with a rake to remove clumps of grass and stones.
  • Dig a hole for each plant large enough to amply accommodate the root ball.  
  • Carefully remove the plant from its pot and gently loosen the root ball with your hands to encourage good root development. Be careful with the roots as dill roots are easily damaged.
  • Place the top of the root ball even with the level of the surrounding soil. Fill with soil to the top of the root ball. Press soil down firmly with your hand.  
  • Use the plant tag as a location marker.  
  • Thoroughly water and apply a light mulch layer on top of the soil (1-2 inches) to conserve water and reduce weeds.

 

How to Grow

  • Keep weeds under control during the growing season. Weeds compete with plants for water, space and nutrients, so control them by either cultivating often or use a mulch to prevent their seeds from germinating.  
  • Mulches also help retain soil moisture and maintain even soil temperatures. For herbs, an organic mulch of aged bark or shredded leaves lends a natural look to the bed and will improve the soil as it breaks down in time.  Always keep mulches off a plant's stems to prevent possible rot.
  • Keep plants well-watered during the growing season, especially during dry spells. Plants need about 1 inch of rain per week during the growing season. It's best to water with a drip or trickle system that delivers water at low pressure at the soil level. If you water with overhead sprinklers, water early in the day so the foliage has time to dry off before evening, to minimize disease problems. Keep the soil moist but not saturated.  
  • Fertilize as needed with Gro-tone All Purpose Organic Plant Food.
  • Remove flowers as they appear to help prolong leaf production for a short time.
  • Pinch off spent flowers to help prevent prolific self-sowing.
  • At the end of the season, let some go to seed to provide a crop for next year.
  • Monitor for pests and diseases. Check with your local Cooperative Extension Service for pest controls recommended for your area.

 

Harvesting and Preserving Tips

  • Harvest leaves fresh as needed.
  • Leaves may be dried but they lose much of their pungency when used dried rather than fresh. Dill leaves may be frozen.
  • Harvest seeds when the flowers are fully developed but not brown. Cut the whole stem and tie in small bundles. Hang in a warm, dry, airy place out of the sun. Seeds can be stripped from the flowers by rubbing the flowers between the palms of your hands. Seeds are great for pickling.
  • Store seeds in a tightly closed container in a dark closet or cupboard.

 

Common Disease Problems


Cercospora Leaf Blight: Small flecks which develop a yellowish halo appear on the leaves and turn brown and coalesce. They cause the leaves to wither and die. Burpee Recommends: Remove infected plants and destroy all plant debris. Rotate crops.


Damping Off: This is one of the most common problems when starting plants from seed. The seedling emerges and appears healthy; then it suddenly wilts and dies for no obvious reason. Damping off is caused by a fungus that is active when there is abundant moisture and soils and air temperatures are above 68 degrees F. Typically, this indicates that the soil is too wet or contains high amounts of nitrogen fertilizer. Burpee Recommends: Keep seedlings moist but do not overwater; avoid over-fertilizing your seedlings; thin out seedlings to avoid overcrowding; make sure the plants are getting good air circulation; if you plant in containers, thoroughly wash them in soapy water & rinse in a ten per cent bleach solution after use.


Downy Mildew: This fungus causes yellow spots on the upper surface of the leaves, and whitish gray patches on the undersides and eventually both sides of the leaves. Burpee Recommends: Rotate crops with plants in a different family. Avoid overhead watering. Provide adequate air circulation, do not overcrowd plants. Do not work around plants when they are wet. 


Powdery Mildew: This is a fungus disease that causes a white powdery look on the foliage. This disease weakens plants as it inhibits their ability to make carbohydrates for themselves using sunlight. Burpee Recommends: You can remove infected plant areas, increase air circulation, and try to reduce the humidity in the room. Check with your Cooperative Extension Service for fungicide recommendations. 


Root Knot Nematodes: Microscopic worm-like pests that cause swellings (galls) to form on roots. Plants may wilt or appear stunted. This is a serious problem in many Southern states. Burpee Recommends: Do not plant into infested soil. Grow resistant varieties. Try planting ‘Nema-Gone’ marigolds around your plants. 

 

Common Pest and Cultural Problems


Aphids: Greenish, red, black or peach colored sucking insects can spread disease as they feed on the undersides of leaves. They leave a sticky residue on foliage that attracts ants. Burpee Recommends: Introduce or attract natural predators into your garden such as lady beetles and wasps who feed on aphids. You can also wash them off with a strong spray, or use an insecticidal soap. 


Armyworm: Holes in leaves can be singular or clumped together. Leaves can become skeletonized. Egg clusters may be evident on foliage with a cottony or fuzzy appearance. Young larvae are pale green and adults are darker with a light line along the side and pink underside. Burpee Recommends: Introduce natural enemies to the area.


Cutworms: These insects cut off the seedlings at the soil level. Burpee Recommends: Place a paper cup collar (use a coffee cut with the bottom cut out) around the base of the plant. They are usually mostly a problem with young seedlings. You can also control by handpicking and controlling weeds, where they lay their eggs. 


Tomato Horn Worm: Large, green caterpillars can quickly devour foliage. Burpee Recommends: With sturdy gloves on, hand pick and destroy them. HOWEVER if you see white projections coming from the back of the caterpillar, do not destroy it. These are the egg cases of a parasitic wasp that will destroy the caterpillar. These wasps should be allowed to remain in your garden.


Whitefly:  These are small white flying insects that often rise up in a cloud when plants are disturbed or brushed against. Burpee Recommends: They are difficult to control without chemicals. Try hot pepper wax or insecticidal soap. Check with your Cooperative Extension Service for pesticide recommendations. 

 

Dill FAQs


Can I grow dill in containers? Dill can be a large, rangy plant, but there are smaller varieties ideal for containers, such as Fernleaf. Be sure to use a commercial potting mix rather than garden soil.

Can dill be used as a companion plant? Dill may be used with asparagus, members of the cabbage family, cucumbers, lettuce, tomatoes and onions to benefit flavor and deter insects. Planting beans near dill benefits the dill.

When should I add dill to cooking? Dill is a delicate herb and should only be added close to the end when use in cooking.

Can I cut the flowers of dill? Yes, the flowers of dill are attractive and fragrant and can last for a week in a vase.

Can I start dill inside early? We do not recommend starting dill inside as it develops a tap root and can be easily damaged when transplanting. Also, dill grows quickly when direct sown in the garden so there is usually no need to get a head start.

 

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