Mullein Magic: Why and How to Grow Mullein From Seed in Your Garden

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Are you looking to add a touch of herbal magic to your garden? If so, let me introduce you to the wonderful world of mullein! This tall, stately plant has a long history of medicinal and practical uses, and there’s no better place to grow it than in your own backyard. If you want to grow mullein from seed in your garden, keep reading to dive into the benefits of growing mullein, tips on starting it from seeds, the perfect planting conditions, and the best times to harvest this versatile herb.

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Why Grow Mullein From Seed in Your Garden?

Mullein, scientifically known as Verbascum thapsus, offers a plethora of benefits when cultivated in your garden. Knowing why you should grow mullein in your garden is the first step to medicinal independency!

1. Consistent Supply of Mullein

Mullein is a versatile herb with a range of uses, from traditional herbal remedies to homemade tinctures, teas, and salves. When you cultivate mullein in your garden, you gain a dependable and year-round supply of this valuable plant.

Imagine the convenience of being able to pick fresh mullein leaves or flowers whenever you need them. No more searching foraging spots or relying on store-bought options, which may not always be available or of the desired quality.

2. Quality Control

When you grow mullein in your own garden, you have complete control over its growing conditions. This means you can ensure that your mullein is cultivated organically and without the use of pesticides, herbicides, or synthetic fertilizers.

By maintaining a pesticide-free and chemical-free environment, you can be confident that the mullein you harvest is pure, natural, and free from any potentially harmful residues. This quality control is particularly important when using mullein for medicinal purposes, as you want the most potent and unadulterated herb possible. You never know what foraged mullein has been exposed to before you harvested it so it’s definitely a concern when ingesting.

grow verbascum

3. Cost-Effectiveness

Purchasing mullein from stores or online retailers can be expensive, especially if you plan to use it regularly or in larger quantities. By growing mullein in your garden, you not only save money in the long run but also reduce your reliance on external suppliers.

This cost-effectiveness is not only beneficial for your pocket but also aligns with the self-sufficiency ethos of homesteading. You’ll be less dependent on external sources for your herbal needs, which can be a significant advantage in times of scarcity or emergencies.

4. Aesthetics and Wildlife Attraction

Mullein isn’t just a practical addition to your garden; it can also enhance its beauty. The tall, graceful stalks adorned with bright yellow flowers add a unique and attractive element to your landscape. The presence of mullein can transform your garden into a visually appealing space that you can enjoy year after year.

Furthermore, if you are looking for a pollinator magnet, grow mullein! The vibrant yellow flowers attract bees, butterflies, and other beneficial insects to your garden. By planting mullein, you’re not only providing a food source for these essential pollinators but also contributing to the overall health of your garden ecosystem.

Starting Seeds to Grow Mullein

Planting mullein from seeds allows you to have complete control over the growth process and ultimately reap the rewards of your efforts. Before diving into the details, it’s important to note that mullein seeds are extremely tiny, so handling them with care is crucial.

Preparing Seed Trays or Pots

To begin, gather your mullein seeds and prepare your growing containers. Choose containers with proper drainage to prevent waterlogging, as damp conditions can hinder the growth of seedlings. Fill the containers with a well-draining potting mix, ensuring there are no large clumps or debris. Use a potting mix that’s slightly acidic to neutral in pH (between 6.0 and 7.0). You can create a suitable mix by combining regular potting soil with perlite or vermiculite to improve drainage.

Planting Mullein Seeds

Once your containers are ready, lightly sprinkle the mullein seeds over the surface of the soil. Avoid burying them too deep, as these tiny seeds need exposure to light to germinate. Gently press the seeds into the soil, ensuring they make good contact without being completely covered. There’s no need to bury them deeply; a light covering of soil is sufficient. Lightly water the soil using a fine mist or a watering can with a gentle shower setting. Be careful not to dislodge the seeds.

mullein growing conditions

Creating a Mini Greenhouse

To encourage germination, create a mini greenhouse effect. Cover the seed trays or pots with a plastic wrap or a clear plastic dome. This helps retain moisture and warmth, creating optimal conditions for germination. Place the trays or pots in a warm, well-lit area, such as a sunny windowsill. Mullein seeds generally require a consistent temperature of around 70°F (21°C) to germinate.

Germination Period

Mullein seeds typically germinate within 14 to 21 days, though it can sometimes take longer. Be patient and keep an eye on your seedlings as they emerge. While waiting for the seeds to germinate, keep a close eye on the moisture levels of the soil. Mullein seeds require consistent moisture to sprout, so it’s essential to water them gently, taking care not to disturb the seeds or dislodge them from the soil.

Once the seedlings emerge, ensure they receive adequate sunlight. Mullein thrives in full sun, so position your containers in a sunny area or provide artificial grow lights to mimic natural sunlight. As the seedlings continue to grow, thin them out if they become crowded, allowing the strongest plants to flourish.

Transplanting Seedlings

Once your mullein seedlings have developed a few true leaves and are sturdy enough to handle, it’s time to transplant them. Space the transplants 2-3 feet apart to allow for proper growth and airflow. Gently remove the seedlings from their original trays or pots, taking care not to damage the delicate roots. Dig holes in the new planting area, place the seedlings in the holes, and backfill with soil, gently firming it around the plants.

Choosing the Perfect Planting Area To Grow Mullein

Mullein is often found in nature in sunny fields and easements. They will grow in practically any condition but they will become bigger and more potent if planted in a preferred location. By carefully selecting the right spot, you will set the stage for your mullein to thrive in all its glory. When it comes to finding the ideal home for your mullein, there are a few key factors to consider.

sowing verbascum seeds

Sunlight Requirements

First and foremost, mullein plants love sunlight. They require at least six to eight hours of direct sunlight each day to grow and bloom to their fullest potential. So, it’s important to choose a location in your garden that receives ample sunlight throughout the day.

Soil Preference

In addition to sunlight, mullein also prefers well-draining soil. These plants dislike standing water and thrive in soil that is loose, sandy, and well-aerated. Avoid heavy clay soils that can trap moisture and cause root rot. If your garden has dense or poorly draining soil, consider amending it with organic matter such as compost or well-rotted manure to improve drainage and fertility.

pH Range

Furthermore, mullein plants appreciate a slightly alkaline soil pH. Aim for a pH level between 6.0 and 7.0 to provide the optimal growing conditions for your mullein. You can easily test the pH of your soil using a home testing kit available at most gardening centers.

Visual Impact

Lastly, consider the overall aesthetic of your garden when choosing the perfect planting area for mullein. These tall and statuesque plants can make a stunning backdrop or focal point in your landscape design. They also look fantastic when planted in groups or incorporated into cottage-style gardens. So, take into account the visual impact that mullein can have when deciding on its placement.


When it comes to nutrients, mullein is not a particularly heavy feeder. However, enriching the soil with a balanced organic fertilizer before planting can give your plants a healthy head start. Choose a fertilizer that is lower in nitrogen and higher in phosphorus and potassium, as these nutrients promote root development and flower production. Apply the fertilizer according to the package instructions, being careful not to over-fertilize as this can actually inhibit flower formation.


Understanding mullein’s watering needs at different stages of growth is crucial.

  • Early Care: During the early stages of growth (transplanting and initial establishment), keep the soil consistently moist but not waterlogged. Be mindful not to let the soil dry out completely during this phase.
  • Established Plants: Once mullein is well-established (usually after its first year), it becomes more drought-tolerant. You can reduce watering frequency. However, during prolonged dry spells, providing supplemental water can promote healthy growth and prevent stress.
how to grow mullein

Harvesting Mullein

Harvesting mullein at the right time and in the correct manner is essential to maximize its medicinal and practical benefits.

Harvesting Leaves

The optimal time to harvest mullein leaves is during the first year of the plant’s growth, typically in late spring or early summer. Mullein leaves are typically harvested before the plant produces its flower spike. Harvesting mullein leaves before the flower stalk forms is recommended because the leaves are at their peak medicinal potency and flavor before the plant diverts its energy into producing the flower spike. Young mullein leaves are tender, mild in flavor, and have a pleasant texture, making them ideal for culinary and herbal uses. As the plant matures and focuses on producing the flower spike, the leaves may become tougher and less palatable.

  • First Year Growth: In its initial year, mullein typically grows as a basal rosette of leaves close to the ground. This is the prime time to harvest the leaves.
  • Late Spring to Early Summer: Plan your leaf harvest when the plant is still in the rosette stage but has developed several healthy, full-sized leaves. Late spring to early summer is the ideal window for leaf harvesting, as this is when the leaves are at their peak quality and potency.
  • Select Healthy Leaves: Choose leaves that are free from damage, disease, or pests.
  • Harvest a Portion: When harvesting mullein leaves, it’s essential to leave some on the plant to allow it to continue photosynthesizing and support the development of the flower spike. Typically, you can safely harvest up to one-third of the basal leaves without harming the plant.
grow mullein

Harvesting Flowers

The bright yellow flowers of mullein are also valuable for herbal uses. The optimal time to harvest mullein flowers is when they are in full bloom. Harvesting mullein flowers at this stage ensures that they contain the highest concentration of medicinal compounds and that they are at their most vibrant and potent.

  • Vibrant Yellow Color: Mature mullein flowers have bright yellow petals that are fully open and not wilted. The flowers should exhibit a rich, sunny yellow color.
  • Flower Spikes: Look for flower spikes that have elongated and reached their full height. They can grow quite tall, often exceeding three feet in height.
  • Buds Fully Open: The individual flowers on the spike should have fully opened, revealing their inner reproductive structures.
  • Aromatic Scent: Gently crush or bruise a flower to release its fragrance. Mullein flowers have a mild, pleasant, and slightly sweet aroma.
  • Dry Weather: Ideally, choose a dry and sunny day for harvesting. Avoid harvesting mullein flowers when they are wet or damp from rain or dew, as moisture can lead to mold or mildew during the drying process.
  • Time of Day: Harvest mullein flowers during the late morning to early afternoon when any dew has evaporated, but the flowers are still fresh and open.
  • Avoid Overripe Flowers: While you want to harvest flowers in full bloom, try not to wait until they are overripe or beginning to wither. Overripe flowers may have already started producing seeds, which can affect the flavor and quality of the harvested material.

To harvest mullein flowers, use clean, sharp scissors or pruning shears to cut the entire flower spike, including the flowers and some of the stem. Be gentle when handling the flowers to avoid damaging them.

Drying and Storage Techniques

Drying harvested mullein flowers (and leaves) properly is a critical step to preserve their quality, flavor, and medicinal properties. The leaves and flowers should never be washed before drying, but ensure they are clean and free from disease or pests. There are a few different ways to dry both the leaves and flowers.

Drying Mullein Leaves

To dry mullein leaves by bundles, follow these steps:

  • **Gather a small handful of mullein leaves, making sure they are clean and free from any insects or debris.
  • **Tie the stems of the leaves together with a piece of string or twine. Leave a length of string at the top for hanging.
  • **You can also use brown paper bags or parchment paper to cover the leaves and protect them during the drying process. This step is optional but can help keep the material clean and prevent dust from settling on them.
  • **Find a suitable location for hanging the bundles. It should be dry, well-ventilated, and away from direct sunlight to prevent fading.
  • **Use the extra length of string or twine to hang the bundles upside down from a horizontal rod, line, or drying rack. Ensure that there is enough space between the bundles for air circulation.
  • **Allow the mullein leaves to hang and air-dry for about 1 to 2 weeks. The exact drying time can vary depending on humidity levels, but they should be thoroughly dry when they feel crisp.
  • **Check on the drying progress regularly, and if you notice any signs of mold or mildew, discard the affected bundles immediately.

Drying Mullein Flowers

If the mullein flowers are still intact to the stem, simply hand the step following the method mentioned above. However, if you harvested by removing the flowers, simply lay the flowers out on a clean surface. The area should have good air flow and be out of direct sunlight. You’ll know the flowers are dry when they crumble between your fingers.

Storing Mullein

Proper storage of dried mullein is essential to maintain their quality, flavor, and medicinal properties for an extended period.

growing mullein from seed
  • Select airtight containers for storing the dried mullein leaves and flowers. Glass jars with tight-fitting lids work well. Make sure the containers are clean and completely dry before use.
  • Fill the chosen containers with the dried mullein leaves, leaving some headspace at the top. It’s important not to overcrowd the container, as this can lead to crushed or broken leaves. Leaving the leaves intact helps to maintain the volatile oils within the leaves. Only crush the material just before using.
  • Label each storage container with the date of harvest and any other relevant information. This helps you keep track of freshness and ensures you use the oldest supply first.
  • Store the containers in a cool, dark, and dry place. Avoid exposing them to direct sunlight, heat, or humidity, as these conditions can degrade the quality of the dried leaves.
  • Periodically check the stored dried mullein leaves for any signs of moisture, mold, or insects. If you notice any issues, remove and discard affected leaves immediately.


When you grow mullein from seed in your garden, you can get a plethora of benefits, including a consistent supply of this versatile herb, quality control over its cultivation, cost-effectiveness, and the opportunity to beautify your garden while supporting local wildlife. It’s a decision that aligns perfectly with the homesteader’s ethos of self-sufficiency and responsible stewardship of the land. So, roll up your sleeves and get ready to experience the joys of cultivating mullein in your garden!

Hey Beautiful! I’m Tara, garden enthusiasts, keeper of chickens, herbal homesteader and stay at home mom of 3 tiny humans and a sourdough starter named Ma. I love teaching others how to live a self-sufficient and sustainable life through homesteading, scratch cooking, and remembering to live barefoot, wild and free!

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