Melampyrum pratense — a medium houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Melampyrum pratense

Melampyrum Pratense

Updated · 2,730 observations
ON THIS PLANT

Melampyrum pratense, the common cow-wheat, is a plant species in the family Orobanchaceae. The seed of the plant has an elaiosome, which is attractive to wood ants (Formica spp.). The ants disperse the seeds of the plant when they take them back to their nests to feed their young. The plant is an ancient woodland indicator, as the ants rarely carry the seeds more than a few yards, seldom crossing a field to go to a new woodland. The Latin specific epithet pratense means "of meadows".Melampyrum pratense is a food plant of the caterpillars of the heath fritillary (Melitaea athalia), a butterfly.Melampyrum pratense herb has been used in traditional Austrian medicine internally as tea or externally as pillow filling for treatment of rheumatism and blood vessels calcification.Melampyrum pratense can be parasitized by the oomycete species Peronospora tranzschelinana.

A note from PlantMom

Common cow-wheat is fairly resistant to disease and is usually not prone to illnesses. However, it can be affected by pests and diseases present in its surroundings. These infections tend to be mild. As for care, the plant requires moderate maintenance. It should be pruned regularly to keep a neat appearance and support healthy growth. Fertilizing can also help encourage flowering. Common cow-wheat is suitable for anyone with outdoor space, like a garden or patio, and does not demand extensive care experience. It may need more attention when grown indoors.

— PlantMom
CARE GUIDE

How to keep Melampyrum Pratense.

Light

Common cow-wheat typically does best with plentiful sunlight, though it can tolerate dimmer situations. Coming from sunlit habitats, it reaches its greatest growth in those conditions, while reduced light can limit its development. Too much shade or being overly exposed can damage the plant's health.

Water

Common cow-wheat thrives in moist conditions and prefers consistent soil moisture without becoming waterlogged. It is moderately drought-tolerant but requires weekly watering to stay healthy. Using rainwater, which mimics its natural growing conditions, can enhance its growth and resilience. This herbaceous plant is commonly grown outdoors.

Temperature

Common cow-wheat can adjust to a wide range of temperatures, but its distribution may still be restricted by different combinations of water and heat. It performs best in warm summer climates with sufficient rainfall or watering. Extended stretches of cloudy, rainy weather, as well as prolonged high temperatures, can raise the likelihood of Common cow-wheat dying. In winter, appropriate protection against cold can increase the plant's survival rate.

Fertilizer

Common cow-wheat does well with regular, light applications of fertilizer to encourage healthy leaf development. You should feed Common cow-wheat about once a month during the summer. Nitrogen is essential for foliage, and adding nitrogen-rich sources helps Common cow-wheat thrive.

Pruning

To promote the health and growth of common cow-wheat, it's beneficial to prune the plant periodically from early to late spring. Begin by removing any dead stems, and then trim the plant to improve air circulation. Be sure to use clean tools for precise cuts to minimize the risk of infection. These steps will help ensure vibrant blooms and prevent the plant from becoming leggy.

CHARACTERISTICS

Botanical profile.

Plant Type
Herb
Life Cycle
Annual
Genus
Melampyrum
Family
Orobanchaceae
Hardiness Zone
4-8
Mature Height
10 cm to 40 cm
Mature Spread
10 cm to 49 cm
Leaf Color
Green
Leaf Type
Deciduous
Flower Color
Yellow
Flower Size
1.02 cm to 1.78 cm
Bloom Time
Late spring, Early summer, Mid summer
Planting Time
Spring
Harvest Time
Mid summer, Late summer, Early fall
ALSO KNOWN AS

Other names.

en Common Cow-wheat en Cow-wheat en Horse Flower en Stormarimjelle en Talpa lupului en Poala-Sfintei-Mării en Ängskovall
FREQUENTLY ASKED

Reader questions.

How should I water my Common cow-wheat?

To water Common cow-wheat, there are various options available, such as using a garden hose with a spray nozzle, a watering can, or any other common watering tool. This plant is not particularly picky about water sources and can thrive with rainwater, tap water, or filtered water. It is advised to avoid overhead watering as it can harm the leaves and flowers and potentially lead to disease. A drip irrigation system is often the recommended watering method, as it provides even and direct water supply to the soil. If you have a container-grown Common cow-wheat, the same principles apply, but you can use a cup, watering can, or tap to directly water the soil.

What are the sunlight requirements for Common Cow-Wheat?

Common Cow-Wheat thrives best under full sun conditions, which means it requires more than 6 hours of sunlight daily. However, it can also grow in partial sun, about 3-6 hours of sunlight daily. It's important to observe the movement of sunlight through your garden to ensure you're choosing spots that offer the right balance of light for the plant's needs. Excessive shade or overexposure could negatively impact the plant's health, emphasizing the need for a careful balance.

What should I do if I give my Common cow-wheat too much water or too little water?

To prevent underwatering Common cow-wheat, simply water it more consistently when you notice it lacks moisture. However, overwatering is a more serious problem. When Common cow-wheat is overwatered, it can develop diseases that lead to its decline and death. To prevent this, choose a suitable growing location with ample sunlight and good drainage. If you have overwatered Common cow-wheat in a pot, consider repotting it. The previous container may not have had proper drainage or enough drainage holes. When repotting, use loose soils and a pot that drains effectively.

Can Common Cow-Wheat grow in artificial lighting?

Yes, Common Cow-Wheat can grow under artificial lighting, especially when natural sunlight is insufficient. This is particularly useful during winter or in less sunny spaces indoors. LED lights are a preferred choice because they can be tailored to provide specific light wavelengths needed for plant growth. Full sun plants require 30-50 watts per square foot, partial sun plants need 20-30 watts per square foot, and full shade plants need 10-20 watts per square foot of artificial light. The light source should be placed 12-36 inches above the plant, mimicking natural light as closely as possible, and provided for 8-12 hours per day.

How frequently do I need to water my Common cow-wheat plant?

Common cow-wheat requires regular watering throughout the growing season. In the spring, water once a week, but as the season progresses and gets warmer, increase watering to two or three times a week. However, be careful not to exceed this rate as it can harm the plant. It is important to keep the soil relatively moist but not wet regardless of the watering frequency. If growing Common cow-wheat in a pot, watering needs will be higher because pot soil can dry out faster. Generally, water container-grown Common cow-wheat a few times per week compared to just once per week for an in-ground plant.

What are the common symptoms of light deficiency in Common Cow-Wheat?

Common Cow-Wheat shows several symptoms when suffering from inadequate light. These include the growth of smaller new leaves, leggy or sparse growth indicating a stretched appearance due to longer spaces between leaves or stems, faster leaf drop as the plant tries to conserve resources, slower or halted new growth, leaves developing pale colors suggesting a lack of chlorophyll, and symptoms of chlorosis where leaves lose their green color and turn yellow. Additionally, excessive sunlight can cause symptoms like sunscald, leaf curling as a defense mechanism to reduce surface area exposed to light, wilting due to high water loss, and leaf scorching characterized by dry, crispy leaf edges.

How much water does my Common cow-wheat require?

Determining how much water to give your Common cow-wheat can be approached in a few different ways. One option is to gauge the soil's moisture level by feeling it. In this method, you would aim to water until the top six inches of soil feel moist. Another method involves using a specific measurement. Typically, Common cow-wheat requires about two gallons of water per week, adjusted based on factors such as the temperature and rate of soil drying. However, it's important to note that strictly adhering to this guideline might result in overwatering if your plant needs less water for some reason. When growing Common cow-wheat in a container, a different approach is needed. In this case, the goal is to water enough to moisten all layers of dry soil. You can test this by inserting your finger into the soil to check for moisture or by watering until you observe a small amount of excess water escaping through the pot's drainage holes.

How can you improve the growth of Common Cow-Wheat with insufficient sunlight?

Improving growth for Common Cow-Wheat with insufficient sunlight involves several strategies. Indoors, gradually moving plants to sunnier locations or using artificial lighting like desk lamps or professional grow lights can make a significant difference. Ensure the plants receive at least 6 hours of direct sunlight daily or keep artificial lights on for at least 8 hours. Outdoors, gradually relocating your plants to sunnier spots while avoiding sudden changes in light intensity can help avoid sunburn. Pruning obstructing trees or transplanting smaller plants to sunnier locations with good drainage are effective outdoor solutions. However, it's crucial to note that parts of the plant that have already been adversely affected by insufficient light may not recover, but new growth will be healthy after adjusting light exposure.

How do I know if I am watering my Common cow-wheat enough?

Common cow-wheat can be difficult to properly water. On one hand, their deep roots need weekly moisture. However, these plants are highly susceptible to root rot, which can cause browning. Underwatering is less likely, as they can survive without additional watering for some time. However, if they go too long without water, they may wilt and develop dry leaves.

How should I water my Common cow-wheat at different times of the year?

As the season progresses, your Common cow-wheat's water needs will increase. In the spring, you should water it once a week. However, as the summer heat sets in, you may need to water it more frequently, potentially up to three times per week. This is especially important if your Common cow-wheat is in a container, as the soil in containers tends to dry out faster in warm weather. During autumn, when your Common cow-wheat is still blooming, you may need to water it less as the temperature and sun intensity decrease compared to summer.

How should I water my Common cow-wheat when it's small, and when it's bigger?

Common cow-wheat goes through various growth stages throughout the year, with some stages requiring more water than others. To begin, when starting with a seed, it is important to provide sufficient water for germination. This means watering regularly to maintain consistent soil moisture. After a few weeks, as the plant begins to emerge from the soil, it will require slightly less water compared to the seedling phase. Once the plant reaches maturity, it can be watered once per week. During flower development, it may be necessary to slightly increase the amount of water to support the process.

What's the difference between watering Common cow-wheat inside and outside?

Most Common cow-wheat grow outdoors instead of indoors for several reasons. Firstly, these plants typically grow too tall for indoor spaces. Secondly, Common cow-wheat requires more daily sunlight than most indoor locations can provide. If you manage to find a suitable indoor growing spot, you may need to water your Common cow-wheat more frequently compared to outdoor growing. This is because indoor spaces are often drier due to HVAC units, and container soil can dry out quickly.

PLATES
Melampyrum pratense leaf
PLATE 01 · leaf
Melampyrum pratense leaf
PLATE 02 · leaf
Melampyrum pratense flower
PLATE 03 · flower
Melampyrum pratense flower
PLATE 04 · flower
Melampyrum pratense fruit
PLATE 05 · fruit
Melampyrum pratense fruit
PLATE 06 · fruit
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