Dracocephalum parviflorum, known as dragonhead mint or American dragonhead, is a wild North American mint growing across much of the United States (especially in the Great Lakes region and in the deserts and mountains of the West), as well as much of Canada and Alaska. It grows as either an annual or biennial, producing clusters of small pink to violet flowers in whorls at the ends of many branching stems. The seeds are very small (about 2 mm), dark, and high in oil content, about 20%. A recent study suggests that this mint may have application as a commercial birdseed crop in Alaska.
American dragon-head is fairly disease-resistant and generally not prone to illnesses. However, it can be affected by pests and diseases present in its environment. These problems are usually mild. In terms of care, this plant needs moderate maintenance. It should be pruned regularly to keep a good appearance and to support healthy growth. Fertilizing can also encourage flowering. American dragon-head is suitable for anyone with an outdoor area, such as a garden or patio, and does not demand extensive care experience. It may need more attention when grown indoors.
How to keep Dracocephalum Parviflorum.
Light
American dragon-head comes from bright, open habitats where it does best in full sun. It can tolerate partial sun but favors direct sunlight for optimal growth. This plant, which may be annual or biennial, is known for its sun-loving nature.
Water
The American dragon-head is an herbaceous perennial that thrives in moderate moisture and requires weekly watering. It adapts well to outdoor environments, benefiting from natural rainfall. Its growth cycle is synchronized with seasonal water availability, making it an excellent choice for gardeners who want to replicate natural ecosystems in their landscapes.
Temperature
American dragon-head can tolerate a wide span of temperatures, though its range may still be restricted by specific combinations of moisture and heat. It performs best in warm summer conditions with enough rainfall or watering. Long periods of cloudy, rainy weather, as well as extended high temperatures, can raise the chance of American dragon-head dying. In winter, adequate protection from cold can boost the plant's survival rate.
Fertilizer
When most of American dragon-head's blooms have opened to full size, resume fertilizing. As the flowers reach peak output, apply fertilizer once every three to four weeks, weather permitting. Then, when the plant begins producing fewer new blooms, stop fertilizing; there's no need to feed it if it can no longer produce additional blooms.
Pruning
The American dragonhead plant showcases vibrant tubular flowers and aromatic leaves. To maintain its health and appearance, essential pruning should be performed in early to late spring. This involves removing dead stems and spent flowers. Such pruning promotes better growth, improves air circulation, reduces the risk of disease, and encourages a bushier appearance.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Annual, Biennial, Perennial
- Genus
- Dracocephalum
- Family
- Lamiaceae
- Hardiness Zone
- 3-8
- Mature Height
- 20 cm to 76 cm
- Mature Spread
- 15 cm to 30 cm
- Leaf Color
- Green, Dark Green
- Leaf Type
- Deciduous
- Flower Color
- White, Purple, Blue
- Flower Size
- 0.51 cm to 1.02 cm
- Bloom Time
- Early summer, Mid summer
- Planting Time
- Spring, Summer, Autumn
- Harvest Time
- Late summer, Early fall
Other names.
Reader questions.
How should I water my American dragon-head plant?
To water American dragon-head plants, you have several options. You can use a garden hose with a spray nozzle, a watering can, or any other common watering tool. This plant is not too particular about the type of water it receives, as it can thrive with rainwater, tap water, or filtered water. However, it is best not to water this plant from above as it can harm the leaves and flowers and potentially cause disease. Instead, a drip irrigation system is often the most effective method, as it delivers water evenly and directly to the soil. If you have a container-grown American dragon-head, you can follow a similar watering technique but use a cup, watering can, or tap to directly water the soil.
How many hours of sunshine does the American dragon-head plant need each day to grow well?
To ensure the healthy growth and survival of the plants, it is important to provide them with a minimum of 6 to 8 hours of sunlight every day. Ideally, they should receive more sunlight in the morning, especially during the summer. The American dragon-head, in particular, requires full sunlight and benefits from as much sunlight as possible. The more light these plants receive, the better they are able to produce food, display beautiful blooms, and thrive.
What do I need to do if I give my American dragon-head plant too much or too little water?
To prevent underwatering American dragon-head, simply water it more regularly when you notice it lacks moisture. Overwatering, on the other hand, can be more dangerous if not detected early. It can lead to diseases and the plant's decline. To avoid this, choose a sunny location with good soil drainage. If your potted American dragon-head is overwatered, consider changing the pot to one with better drainage. Use loose soil and ensure the new pot drains efficiently when repotting.
What kind of sunlight does American dragonhead plant need?
The American dragon-head thrives in full sunlight. To ensure even sun exposure, it is best not to overcrowd them. It is important to avoid depriving the leaves of sunlight. If planting in pots, place them in windows with direct sun and make sure they receive full sunlight regardless of the time of year. Partial or filtered light is not ideal as it weakens the stems and affects the health of the flowers. It is recommended to always keep the American dragon-head exposed to the sun.
How frequently should I water my American dragon-head plant?
American dragon-head needs regular watering throughout the growing season. Initially, water the plant once a week in spring. As the season progresses and it gets warmer, you may need to increase the frequency to two to three times per week. However, be cautious not to exceed this rate as it can harm the plant. It's important to keep the soil moist but not overly wet, regardless of how often you water. When growing American dragon-head in a pot, the watering needs are a bit different. In general, you'll need to water container-grown plants more frequently as the potted soil can dry out faster than ground soil. Typically, water them a few times per week compared to just once per week for plants in the ground.
Can sunlight harm plants? How can I protect my American dragon-head plant from sun and heat damage?
When the temperature goes above 90℉ (32℃), the American dragon-head can be damaged by extreme heat, especially if it's exposed to the sun for long periods of time. It's best to provide shade from the afternoon sun during the summer, as the sunlight is stronger and lasts 50% longer than in the winter. If the American dragon-head is stressed from too much sunlight, make sure to keep it well-watered. Water the plant when the top 2 inches of soil are dry, and if it's too hot outside, consider moving the plants indoors if they are in containers. It's normal for the plant leaves to wilt during the day but recover at night. However, if the American dragon-head continues to droop, it indicates that the plant is losing water quickly and needs to be watered.
How much water does my American dragon-head require?
There are a few ways to determine how much water to give your American dragon-head plant. Some gardeners rely on feeling the soil for moisture and suggest watering until the top six inches of soil feel moist. Others use a set measurement, offering about two gallons of water per week, considering factors like temperature and soil dryness. However, following strict guidelines might lead to overwatering if your plant doesn't need that much. For container-grown plants, a different method is needed. You should water until all layers of soil are moist, which can be checked by sticking your finger in the soil or looking for a slight trickle of excess water from the drainage holes.
Should I keep the American dragon-head out of the sun?
The American dragon-head is not sensitive to the sun and actually enjoys it. Some species are even attracted to sunlight. It is ideal to plant them in south-facing gardens to maximize their exposure to the sun from morning to afternoon. However, it is important to note that while the sun is beneficial, some species may get sunburned. To protect them from the intense afternoon and midday sun, you can provide shade from a tree or a wall. Growing the American dragon-head in shady areas is not possible because the larger flowers require ample energy for growth and production. To achieve the best results, always ensure the plants have adequate lighting conditions and place them in a location with full sun.
How can I know if I am giving enough water to my American dragon-head plant?
Avoiding overwatering your American dragon-head can be a challenge. On one hand, the plants need moist soil weekly because of their deep roots. However, they are very vulnerable to root rot and overwatering can cause browning. Underwatering is less of a concern as these plants can survive without frequent watering for a while. However, prolonged lack of water can cause wilting and dry leaves.
What will happen if the American dragon-head doesn't get enough sunlight?
It's important to note that when the American dragon-head doesn't get enough sunlight, the photosynthetic process slows down. This lack of sunlight causes the stems to become thin and long, as they try to find more sunlight. In the shade, they won't bloom or produce seeds. Insufficient sunlight can also cause the older leaves to die, while the new ones will be lighter in color and smaller in size. The American dragon-head loves the sun but can wilt in excessive heat and ultraviolet light during the summer. To prevent scorching, consider covering them with a green shaded net, especially in the summer, or use a fan to reduce heat when they're indoors.
How should I water my American dragon-head plant throughout the year?
As the seasons progress, the water needs of your American dragon-head plant will change. In spring, watering once a week is sufficient. However, as summer approaches and temperatures rise, you may need to increase watering to about three times per week, especially if the plant is in a container. Container soil tends to dry out faster in warm weather. In autumn, when the plant is still blooming but temperatures have cooled down, it will require less water since the sun is not as intense as in summer.
Does the American dragon-head plant require unique attention to sunlight as it goes through various stages of growth?
Young American dragon-head plants require more light than their mature counterparts. However, it is important to ensure that they receive appropriate levels of light to avoid shocking them, especially if they are grown in a nursery. These younger plants may be more sensitive to direct sunlight during the summer, so it is best to introduce light gradually and in a slow manner.