Tiarella

Description

Tiarella, also known as foamflower, is a genus of herbaceous perennials native to North America and Asia. It belongs to the Saxifragaceae family and is prized for its delicate foliage and pretty flowers. The plant typically grows to a height of 6-12 inches and spreads slowly by rhizomes. Tiarella is a popular choice for woodland gardens, rock gardens, and borders.

Taxonomic Information

Appearance

Tiarella has lobed leaves that are often variegated with shades of green, silver, and burgundy. The leaves are roughly heart-shaped and have a slightly serrated edge. In spring, the plant produces spikes of delicate, star-shaped flowers that range in color from white to pink. The flowers are borne on slender stems that rise above the foliage.

Care Guide

To keep your Tiarella healthy and thriving, follow these care tips:Water: Tiarella prefers moist but well-drained soil. Water regularly to keep the soil consistently moist, but avoid overwatering.Fertilization: Feed your Tiarella in early spring with a balanced, all-purpose fertilizer. Repeat every 6-8 weeks during the growing season.Soil: Tiarella prefers rich, organic soil that is slightly acidic. If your soil is heavy or clay-like, amend it with compost or peat moss to improve drainage.Sunlight: Tiarella prefers partial shade to full shade. Avoid planting it in direct sun, as this can scorch the leaves and cause the plant to wilt.Hardiness Zones: Tiarella is hardy in USDA zones 4-9.

Common Pests & Diseases

Tiarella is relatively disease and pest-resistant, but it can occasionally be affected by powdery mildew or leaf spot. To prevent these issues, provide good air circulation around the plant and avoid overhead watering. If you do notice signs of disease, treat the plant with a fungicide.

Habitat

Tiarella is native to woodlands and shady areas in North America and Asia. It prefers moist soil and can often be found growing near streams or in wetlands. In the garden, Tiarella is a great choice for shady borders, rock gardens, and woodland settings.

Question and Answer

Q: Can Tiarella tolerate dry soil?
A: No, Tiarella prefers moist soil and can suffer if the soil dries out.Q: How often should I fertilize my Tiarella?
A: Fertilize your Tiarella in early spring and repeat every 6-8 weeks during the growing season.Q: What is the best location to plant Tiarella?
A: Tiarella prefers partial shade to full shade and moist, well-drained soil.Q: How do I propagate Tiarella?
A: Tiarella can be propagated by division in spring or fall.

Related Plants

Here are some related plants to Tiarella:

• Astilbe
• Brunnera
• Heuchera
• Ligularia
• Primula

References

• “Tiarella.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=278745&isprofile=0&cv=5.
• “Tiarella.” Plant Delights Nursery, www.plantdelights.com/collections/tiarella-foamflower.
• “Tiarella.” RHS Gardening, www.rhs.org.uk/Plants/29720/Tiarella/Details.