Garibaldi's Aster Plant Care

Garibaldi's Aster (Aster garibaldii) belongs to the Asteraceae family within the Aster genus. Garibaldi's Aster is native to the mountains of Europe, with a subspecies native to Canada and the United States. Garibaldi's Aster is also known as Aster alpinus var. elatior, Aster alpinus var. fallax, Aster chrysocomoides.

Garibaldi's Aster displays an upright, bushy perennial growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Garibaldi's Aster produces daisy-like flowers in various colors like purple, pink, white, and blue.

Leaf size: approximately 4 inches.

Aster garibaldii requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Garibaldi's Aster thrives in full sun to partial shade.

Aster garibaldii grows best at temperatures of 50–75°F. Garibaldi's Aster prefers humidity levels of 40–70%.

Well-draining loamy soil with added compost for nutrients. Good drainage is essential for Garibaldi's Aster to prevent waterlogging, which leads to root rot and fungal issues.

Feed Garibaldi's Aster every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.

Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.

The PlantoScan app can remind you when to water and when to fertilize each plant.

Divide and repot every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.

Garibaldi's Aster can be propagated through seeds, division of clumps. Similar propagation techniques also apply to rough-surface aster plant care, which shares the same genus.

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Garibaldi's Aster is susceptible to aphids, slugs, snails. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

Garibaldi's Aster grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Garibaldi's Aster is native to the mountains of Europe, with a subspecies native to Canada and the United States. In cooler regions, grow Garibaldi's Aster as a houseplant or bring it indoors before the first frost.