‘Royal Candles’ Veronica (Veronica spicata ‘Royal Candles’) is a popular perennial known for its striking appearance and simple care requirements. It offers vibrant purple-blue flower spikes that create a vertical accent in garden beds. Its compact growth habit and attractive foliage make it a favored choice for reliable color and form.
Optimal Growing Environment
‘Royal Candles’ Veronica thrives in locations with ample sunlight. For abundant flowering, provide at least six hours of direct sun daily. It tolerates light shade, especially in hotter climates, but too much shade may result in fewer blooms.
The plant performs best in well-draining soil, as soggy conditions can lead to root issues. It adapts to various soil types, including sandy, loamy, or clay, provided there is good drainage. A slightly acidic to neutral soil pH, ideally between 6.0 and 7.5, is suitable for healthy growth.
Consistent moisture is beneficial, particularly during dry periods and as the plant establishes itself. After initial establishment, ‘Royal Candles’ Veronica becomes more tolerant of drier conditions. To determine when to water, check soil moisture by inserting a finger about three inches deep; water if dry.
Fertilization is generally not a heavy requirement. If soil is poor, a light application of balanced, slow-release fertilizer in early spring can promote healthy growth and flowering. Over-fertilizing should be avoided, as it can encourage excessive foliage growth at the expense of blooms.
Pruning for Health and Blooms
Pruning maintains the shape and encourages continuous flowering of ‘Royal Candles’ Veronica. This practice stimulates new growth and successive flushes of blooms throughout the growing season. It also helps maintain a compact form and removes spent flowers.
Deadheading involves removing faded flower spikes. This directs the plant’s energy away from seed production towards new blooms, leading to a longer flowering period. Snip spent flower stalks at the base to encourage rebloom.
After the main bloom period or in early spring, a significant cutback can encourage bushier growth and prepare the plant for the season. Shearing foliage to about three inches can promote fresh growth. This seasonal pruning rejuvenates the plant and ensures a robust display of flowers.
Addressing Common Issues
‘Royal Candles’ Veronica is generally free from significant pest and disease problems. However, it can occasionally encounter issues. Aphids and spider mites are common pests. These can be managed with a strong water spray or insecticidal soap. Encouraging beneficial insects also helps naturally control pests.
Fungal diseases, such as powdery mildew, can affect the foliage, especially in conditions with poor air circulation or high humidity. Root rot is another problem, typically occurring in overly wet or poorly draining soils. To prevent these issues, ensure adequate spacing between plants to improve air movement and provide well-drained soil.
Environmental stressors can impact plant health. Wilting might indicate underwatering or overwatering; yellowing leaves could signal nutrient deficiency or excessive moisture. Addressing the underlying environmental factor, such as adjusting watering or providing nutrients, can help the plant recover.
Preparing for Winter
‘Royal Candles’ Veronica is a hardy perennial, thriving in USDA Zones 3 to 9. It withstands cold winter temperatures and returns year after year. Its perennial nature simplifies winter preparation.
Cutting back foliage in late fall or early spring is an option for tidiness. Some gardeners leave spent foliage through winter for insulation and visual interest. In late winter or early spring, before new growth, cut the plant back close to the ground.
Applying a layer of organic mulch, such as shredded bark or compost, around the base in late fall offers additional protection. This mulch insulates roots from extreme temperature fluctuations and retains soil moisture. Ensure mulch is not piled directly against the crown to prevent rot.