Spergula

Description

Spergula is a genus of flowering plants that belongs to the Pink family. It is native to North America, Europe, and Asia. The genus name comes from the Latin word “spergula,” which means “a little seed.” The plants are annual or perennial herbs, and some species are considered weeds. Spergula plants have tiny flowers that bloom in summer, and the seeds are dispersed by wind. The plants can grow up to 3 feet tall and have a spread of up to 2 feet wide.

Taxonomic Information

Appearance

Spergula plants have narrow, lance-shaped leaves that are opposite or whorled. The tiny flowers are white or pink and have five petals that are deeply notched. The plants have a spreading growth habit and can form dense mats. The stems are slender and can be hairy or smooth. The seeds are tiny and round and are enclosed in a capsule that splits open when ripe.

Care Guide

Spergula plants prefer well-drained soil that is slightly alkaline. They require full sun to grow and should be watered regularly, especially during dry periods. Fertilize the plants once a month during the growing season with a balanced fertilizer. Spergula plants are hardy in USDA zones 3-8 and can be grown as annuals in warmer zones. Trim back the plants after flowering to encourage bushier growth and more blooms.

Common Pests & Diseases

Spergula plants are susceptible to fungal diseases such as root rot, powdery mildew, and rust. They can also be attacked by aphids, spider mites, and thrips. To prevent fungal diseases, avoid overwatering the plants and provide good air circulation. To control pests, use insecticidal soap or neem oil spray.

Habitat

Spergula plants are found in a variety of habitats, including fields, meadows, pastures, and disturbed areas. They are often found in dry, sandy soils and can tolerate drought. Some species are considered invasive and can displace native plants.

Question and Answer

Q: Can Spergula plants be grown in containers?

A: Yes, Spergula plants can be grown in containers as long as they have good drainage and are watered regularly.

Q: How often should Spergula plants be fertilized?

A: Spergula plants should be fertilized once a month during the growing season with a balanced fertilizer.

Q: Are Spergula plants drought-tolerant?

A: Yes, Spergula plants can tolerate drought and are often found in dry, sandy soils.

Q: What is the best way to control pests on Spergula plants?

A: To control pests on Spergula plants, use insecticidal soap or neem oil spray.

Related Plants

• Spergula arvensis
• Spergula morisonii
• Spergula pentandra
• Spergula viscosa

References

• “Spergula.” Missouri Botanical Garden. Accessed 28 July 2021. <https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=282002&isprofile=0&basic=spergula>.
• “Spergula.” Plants of the World Online. Accessed 28 July 2021. <http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30039753-2>.
• “Spergula.” The Royal Horticultural Society. Accessed 28 July 2021. <https://www.rhs.org.uk/Plants/18138/Spergula/Details>.