Humulus

Description

Humulus is a genus of flowering plants in the Cannabaceae family, which also includes Cannabis. This genus contains about 15 species of annual and perennial vines native to the Northern Hemisphere. Perhaps the most well-known species is Humulus lupulus, commonly known as hops, which is extensively grown for its use in the brewing industry. Hops are also used in traditional medicine due to their sedative properties.

Taxonomic Information

Here is the taxonomic information of Humulus:

Appearance

Humulus plants are typically climbing vines that can grow up to 25 feet (7.6 meters) tall. They have rough stems and alternate, palmately lobed leaves with toothed edges. The plants produce cones, which are used in the brewing industry to add flavor and aroma to beer. The cones are made up of small, sticky bracts that surround the female flowers. These bracts contain lupulin, a yellowish substance that gives hops their characteristic bitter taste and aroma.

Care Guide

Here are some tips for caring for Humulus:

Water

Humulus plants require regular watering, especially during the growing season. They prefer moist soil but do not tolerate waterlogged conditions.

Fertilization

Humulus plants benefit from regular fertilization, particularly with nitrogen-rich fertilizer. This helps to promote healthy growth and a good yield of cones.

Soil

Humulus plants prefer well-draining, fertile soil with a pH between 6.0 and 8.0. They do best in loamy soil that is rich in organic matter.

Sunlight

Humulus plants require full sun to thrive. They should be planted in a location that receives at least six hours of direct sunlight per day.

Hardiness Zones

Humulus plants are hardy in USDA zones 3 to 8.

Common Pests & Diseases

Here are some common pests and diseases that can affect Humulus plants:

Pests

• Spider mites
• Japanese beetles
• Aphids
• Thrips

Diseases

• Downy mildew
• Powdery mildew
• Verticillium wilt
• Gray mold

Habitat

Humulus plants are native to the Northern Hemisphere and can be found in a variety of habitats, including forests, meadows, and riverbanks. They prefer cool, temperate climates with well-draining soil and full sun.

Question and Answer

Q: How long does it take for Humulus plants to mature?

A: Humulus plants typically mature within two to three years.

Q: Can Humulus be grown indoors?

A: While it is possible to grow Humulus plants indoors, they require a lot of space and sunlight to thrive.

Q: What is the best time of year to plant Humulus?

A: Humulus should be planted in the spring, after the last frost date in your area.

Q: Can Humulus be grown in containers?

A: Yes, Humulus can be grown in containers, but they require a large container and a trellis or other support structure to climb.

Related Plants

Here are some related plants in the Cannabaceae family:

• Cannabis
• Celtis
• Trema
• Pteroceltis

References

• “Humulus.” World Flora Online, http://www.worldfloraonline.org/taxon/wfo-4000000188. Accessed 9 Aug. 2021.
• “Growing Hops: A Complete Guide.” The Old Farmer’s Almanac, https://www.almanac.com/plant/hops. Accessed 9 Aug. 2021.
• “Humulus lupulus.” Missouri Botanical Garden, http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=292124. Accessed 9 Aug. 2021.