Common Mistakes to Avoid When Growing Herbs from Seeds

Growing herbs from seeds can be a rewarding experience, providing you with fresh and flavorful additions to your kitchen. However, novice gardeners often encounter challenges that can hinder their success. Here are some common mistakes to avoid when growing herbs from seeds and how to overcome them. If needed, you can visit Organo Republic to purchase seeds online.

Using Poor-Quality Seeds

Using old or poor-quality seeds can result in low germination rates and weak plants.

The Fix

Purchase seeds from reputable suppliers known for their high-quality products. Check the packet’s expiration date to ensure the seeds are fresh. Store unused seeds in a cool, dry place to maintain their viability.

Incorrect Soil Preparation

Planting seeds in heavy or nutrient-poor soil can impede germination and growth.

The Fix

Use a light, well-draining seed-starting mix, or make your own by combining equal parts of peat moss, vermiculite, and perlite. Avoid garden soil, which can be too dense and may harbor diseases.

Planting Seeds Too Deeply

Burying seeds too deep can prevent them from receiving the light they need to germinate.

The Fix

Follow the planting depth instructions on the seed packet. As a general rule, plant smaller seeds shallowly (1/8 to 1/4 inch deep) and larger seeds deeper (1/2 inch deep).

Overwatering or Underwatering

Both overwatering and underwatering can harm your seedlings. Overwatering can lead to root rot and fungal diseases, while underwatering can cause dehydration and stunted growth.

The Fix

Maintain consistent soil moisture by watering when the top inch of soil feels dry. Use a spray bottle for delicate seedlings to avoid disturbing the soil. Ensure containers have drainage holes to prevent waterlogging.

Insufficient Light

Seedlings that don’t receive enough light will become leggy and weak as they stretch towards the light source.

The Fix

Place seedlings in a sunny location where they can receive at least 6-8 hours of sunlight daily. If natural light is insufficient, use grow lights to provide 12-16 hours of light per day. Position the lights about 2-3 inches above the seedlings and adjust as they grow.

Ignoring Temperature Requirements

Seeds that are exposed to temperatures outside their optimal range may fail to germinate or grow poorly.

The Fix

Most herb seeds germinate best at temperatures between 60-70°F (15-21°C). Use a heat mat if necessary to maintain consistent warmth during germination. Keep seedlings in a stable environment, away from drafts and temperature extremes.

Neglecting to Thin Seedlings

Overcrowded seedlings compete for light, water, and nutrients, leading to weak and spindly plants.

The Fix

Once seedlings have their first true leaves, thin them out to prevent overcrowding. Leave the strongest seedlings and carefully remove the weaker ones.

Skipping Hardening Off

Transplanting seedlings directly outdoors without acclimatizing them can cause transplant shock and stress.

The Fix

Harden off your seedlings by gradually exposing them to outdoor conditions over 7-10 days. Start by placing them outside for a few hours in a sheltered spot and gradually increase their exposure to sunlight and wind.


Excessive fertilization can lead to lush foliage but weak and floppy stems. It can also cause nutrient imbalances.

The Fix

Use a balanced, half-strength liquid fertilizer once seedlings have their first true leaves. Fertilize every two weeks to promote healthy growth. Avoid over-fertilizing, especially with high-nitrogen fertilizers.

Ignoring Pests and Diseases

Failing to monitor your herbs for pests and diseases can result in significant damage before you notice the problem.

The Fix

Regularly inspect your plants for signs of pests such as aphids, spider mites, and fungal diseases. Use organic pest control methods like neem oil, insecticidal soap, or introducing beneficial insects. Maintain good air circulation and avoid overhead watering to reduce disease risk.


By avoiding these common mistakes, you can set your herb garden up for success and enjoy a bountiful harvest. Remember that gardening is a learning process, so don’t be discouraged by setbacks. With patience and care, you’ll soon be rewarded with fresh, flavorful herbs that enhance your culinary creations.