Asperugo procumbens — a medium houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Asperugo procumbens

Asperugo Procumbens

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ON THIS PLANT

Asperugo procumbens, known as madwort or German madwort, is the single species in the monotypic plant genus Asperugo. This plant is native to Europe but has been introduced elsewhere, such as the northern half of North America.

A note from PlantMom

Madwort is largely disease-resistant and usually not prone to illnesses. Nevertheless, it can be affected by pests and diseases present in its environment. Such infections are typically not severe. For care, this plant needs moderate maintenance. It should be pruned regularly to preserve a good appearance and promote healthy growth. Fertilizing can also encourage flowering. Madwort is suitable for anyone with outdoor space, such as a garden or patio, and does not require much plant-care experience. It may need more attention when grown indoors.

— PlantMom
CARE GUIDE

How to keep Asperugo Procumbens.

Light

Madwort comes from sunny, open habitats and does best in full sun. It can tolerate some shade but prefers direct sunlight for the best growth. This plant, which appears as both an annual and a biennial, is noted for its love of sun.

Water

Madwort, native to temperate regions, thrives best with consistent soil moisture. To prevent waterlogging, it should be watered weekly. When grown in open fields outdoors, Madwort adapts well to natural rain patterns, promoting vigorous growth and resilience throughout the growing season.

Temperature

Adapted to habitats with moderate heat requirements, madwort thrives at temperatures between 68 and 95 °F (20 and 35 °C). Seasonal adjustments may be needed to maintain optimal growth.

Fertilizer

Madwort does well with regular, light fertilizer applications to encourage healthy leaf development. You should apply fertilizer to Madwort roughly once a month during the summer. Nitrogen is important for foliage, and providing nitrogen-rich fertilizers helps Madwort prosper.

Pruning

For optimal growth, madwort benefits from careful spring pruning. Focus on removing any dead or damaged branches to promote healthy development. This practice helps maintain a compact shape, improves air circulation, and ensures sufficient light reaches the plant, all of which are essential for its overall vigor and flowering potential.

CHARACTERISTICS

Botanical profile.

Plant Type
Herb
Life Cycle
Annual
Genus
Asperugo
Family
Boraginaceae
Hardiness Zone
2
Mature Height
20 cm to 61 cm
Mature Spread
0.3 m to 1.22 m
Leaf Color
Green
Leaf Type
Semi-evergreen
Flower Color
Blue, Purple
Flower Size
2.54 cm
Bloom Time
Mid spring, Late spring, Early summer
Planting Time
Spring, Summer
Harvest Time
Summer
Native Area
Libya, Turkey, Sweden, India, Austria, Slovakia, Montenegro, Pakistan, Morocco, Belarus, Uzbekistan, Russia, Iraq, Germany, Estonia, Romania, Latvia, France, Nepal, Tajikistan, Tunisia, Czech Republic, Cyprus, Bulgaria, Poland, Armenia, Greece, Ukraine, Serbia, Lebanon, Lithuania, Norway, China, Afghanistan, Syria, Kyrgyzstan, Kazakhstan, Italy, Spain, Switzerland, Denmark, Mongolia, Finland, Iran, Albania, Azerbaijan, Algeria, Hungary, Turkmenistan
ALSO KNOWN AS

Other names.

en Madwort en German-Madwort en Catchweed en Stickseed ar علف چسبک
FREQUENTLY ASKED

Reader questions.

How should I water my Madwort plant?

Madwort can be watered using a garden hose with a spray nozzle, a watering can, or any other common watering tool. It is not picky about the type of water it receives and can survive on rainwater, tap water, or filtered water. However, it is best to avoid watering from overhead as this can harm the leaves, flowers, and potentially lead to disease. Using a drip irrigation system is often the most effective method for watering Madwort, as it delivers water evenly and directly to the soil. If you have a container-grown Madwort, you can apply water directly to the soil using a cup, watering can, or tap.

What are the sun requirements for Madwort?

Madwort, known scientifically as Asperugo procumbens, thrives in environments that offer full sun, which is defined as more than 6 hours of sunlight per day. It can also tolerate partial sun, where it would receive about 3-6 hours of sunlight daily. When selecting a spot for your Madwort, it's crucial to observe the movement of sunlight through the garden to find a location that ensures the plant gets the ideal amount of sun exposure it needs for optimal growth.

What are the ideal temperature conditions for growing Madwort?

Madwort thrives in environments with moderate heating needs, flourishing in temperatures ranging from 68 to 95 °F (20 to 35 °C). To sustain optimal growth, seasonal adjustments may be necessary. Despite being highly cold-tolerant and not requiring additional frost protection measures during winter, it's recommended to water the plant generously before the first freeze in autumn. This ensures the soil remains moist and enters a frozen state, helping prevent drought and water scarcity for the plant during winter and early spring.

What should I do if I give my Madwort plant too much or too little water?

To prevent underwatering your Madwort, simply increase the frequency of watering when you notice it needs more moisture. Overwatering, on the other hand, can be a more serious problem if not addressed early. When the Madwort is overwatered, it can develop diseases that ultimately lead to its decline and death. To avoid this, choose a suitable growing spot that receives ample sunlight for soil drying and has good drainage to prevent water from accumulating. If you are overwatering a potted Madwort, consider transferring it to a new pot with better drainage and loose soil during the repotting process.

What essentials should be considered for growing Madwort?

Madwort is a plant that originally comes from bright, open habitats, thus it performs best under full sunlight but can manage in partial sun. Full sunlight is its preference for achieving optimal growth. This plant's inherent need for sun parallels its adaptability to various conditions as both an annual and a biennial species. For indoor plants lacking natural sunlight, especially during winter or in darker areas, artificial lighting becomes essential. LED lights are recommended due to their ability to provide specific light wavelengths needed by plants. For full sun plants, 30-50W per square foot is necessary, partial sun plants require 20-30W per square foot, and full shade plants need 10-20W per square foot. Positioning the light source 12-36 inches above your plant and ensuring it receives 8-12 hours of light per day mimics natural sunlight conditions well.

How does Madwort react to extremely low temperatures?

Madwort is extremely cold-tolerant, capable of handling winter temperatures above -40°C. However, if the temperature drops below this threshold, you might not notice changes during winter, but there could be a decrease in sprouting, or in some cases, no sprouting at all during spring. If this occurs, the recommended solution is to remove any parts of the plant that have failed to sprout in spring.

How often should I water my Madwort plant?

To ensure the health of your Madwort plant, it is important to water it regularly. In spring, water it once per week. As the season progresses and the weather gets warmer, increase watering to two to three times per week. However, be careful not to exceed this rate as it can harm the plant. Regardless of the watering frequency, make sure the soil remains moist but not wet. When watering a Madwort in a pot, you may need to water it more frequently as potted soil dries out faster than ground soil. In general, plan to water a potted Madwort a few times per week compared to once per week for a plant in the ground.

What symptoms indicate Madwort is receiving insufficient light?

When Madwort doesn't get enough light, several symptoms may manifest, including smaller new leaves, leggy or sparse growth, faster leaf drop, halted growth, and paler new leaves. These are signs the plant is struggling with light deficiency. Moreover, certain conditions like chlorosis, sunscald, leaf curling, wilting, and leaf scorching could also indicate problems with light exposure. Chlorosis involves leaves turning yellow due to chlorophyll breakdown, while sunscald results in damaged plant tissue from intense sunlight. Leaf curling, wilting, and scorching are defense mechanisms or symptoms of stress when the plant is overexposed to sunlight.

What should I do if Madwort is exposed to high temperatures?

Madwort does not tolerate high temperatures well. When the temperature exceeds 35°C, its growth will halt, and the plant becomes more susceptible to rot. To mitigate this, you should trim away any sunburned and dried-up parts. Move the plant to a location that offers shade from the midday and afternoon sun, or use a shade cloth. It's also beneficial to water the plant in the morning and evening to keep the soil moist.

How much water does my Madwort plant need?

There are a few different ways to determine how much water to give your Madwort. One method is to feel the soil for moisture and water until the first six inches of soil are moist. Another option is to use a set measurement, such as giving about two gallons of water per week depending on the temperature and soil dryness. However, be cautious of overwatering if your plant needs less water. When growing Madwort in a container, you should moisten all layers of dry soil and check for moisture by sticking your finger in the soil or noticing excess water drainage.

How can I address light deficiency issues in Madwort?

To counteract light deficiency in Madwort, gradual adaptation to more sunlight is key. For indoor plants, gradually moving them to receive at least 6 hours of direct sunlight daily or employing artificial light sources, like desk or ceiling lamps for 8 hours a day, can help. If the plant is large or not easily movable, investing in professional plant grow lights is advisable. For outdoor plants, it's crucial to relocate them carefully to sunnier spots while avoiding sudden, drastic changes that could cause sunburn. Additionally, for plants on the ground, reducing obstructions such as pruning trees or transplanting to sunnier locations with ample sunlight and good drainage during the plant’s dormant period, generally late winter to early spring, can significantly improve sunlight access.

How do I know if I'm watering my Madwort plant enough?

Avoiding overwatering your Madwort can be difficult. These plants have deep roots that need weekly soil moistening. However, Madwort is highly prone to root rot and browning if overwatered. Underwatering is less likely as Madwort can survive without supplemental watering for some time. Yet, if you go too long without watering, the plant will wilt and develop dry leaves.

PLATES
Asperugo procumbens leaf
PLATE 01 · leaf
Asperugo procumbens leaf
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Asperugo procumbens flower
PLATE 03 · flower
Asperugo procumbens flower
PLATE 04 · flower
Asperugo procumbens fruit
PLATE 05 · fruit
Asperugo procumbens fruit
PLATE 06 · fruit