Alyssum montanum explained

Alyssum montanum is a species of flowering plant belonging to the family Brassicaceae.^[1] It is an evergreen, prostrate perennial with small, hairy, greyish leaves.^[2] It typically grows to 10-15 centimeters tall and 30-45 centimeters across.^[3] It produces tiny, yellow, fragrant flowers from May to July.^[4] These flowers are typically 4-6 centimeters across and borne in dense racemes.^[5]

It is native to France, Switzerland, and Germany. It grows best in full sun with good drainage, and is drought tolerant once established. It's suitable for USDA hardiness zones 3–9, but may be susceptible to aphids and root rot.^[6]

Subspecies:

• Alyssum montanum subsp. gmelinii (Jord. & Fourr.) Hegi & E.Schmid (synonym: Alyssum gmelinii Jord.)^[7]

Notes and References

1. Web site: Alyssum montanum L. Plants of the World Online Kew Science . Plants of the World Online . 25 January 2021 . en.
2. Web site: Alyssum montanum mountain madwort/RHS Gardening. 2021-04-27. www.rhs.org.uk. en-gb.
3. Web site: Plant Profile for Alyssum montanum Mountain Gold - Mountain Gold Alyssum Perennial. 2021-04-28. www.perennials.com.
4. Web site: Alyssum montanum - Beth Chatto's Plants & Gardens. 2021-04-28. www.bethchatto.co.uk.
5. Web site: Home. 2021-04-28. Alpine Garden Society. en.
6. Web site: StackPath. 2021-04-28. www.gardeningknowhow.com.
7. Web site: Alyssum gmelinii Jord. . www.worldfloraonline.org . 10 February 2021.