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Calluna vulgaris 'Spring Torch'
Spring Torch Heather
Europe (Iceland through Scandinavia south to Mediterranean, east to Turkey and Urals; also Morocco and Azores; naturalized in northeastern North America; heathlands, moorlands, acidic bogs)
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Overview
Calluna vulgaris 'Spring Torch' is a low mounding evergreen shrub in the heath family (Ericaceae) reaching 10–15 inches (25–38 cm) tall with a spread of 15–18 inches (38–45 cm). The habit is compact and rounded. The cultivar is grown for a multicolored spring tip display: new growth emerges in vivid shades of cream, pink, coral, and orange against a base of medium green mature foliage, concentrating the color at the branch ends. By midsummer the new growth matures to green and the plant returns to a uniform medium green through fall and winter, with a slight bronze tint in cold weather. Tiny scale-like leaves 1–2 mm long are densely overlapping on wiry stems. Short racemes of small bell-shaped mauve-pink flowers 3–4 mm long open in August–September. Growth rate is slow at 1–3 inches (2.5–8 cm) per year. Hardy to zone 4. The cultivar requires acidic soil at pH 4.5–5.5; alkaline conditions cause chlorosis and decline. The shallow fibrous root system is drought-sensitive. Cool-summer maritime and montane climates suit the species better than hot humid continental climates, where root rot and heat stress cause decline.
Native Range
The species Calluna vulgaris is native to Europe, from Iceland and Scandinavia south to the Mediterranean and east to Turkey and the Urals, with additional populations in Morocco and the Azores and naturalized populations in parts of northeastern North America. It dominates heathlands, moorlands, and acidic bogs.Suggested Uses
Grown in heather gardens, rock gardens, and the edges of acidic-soil borders at 15–18 inch (38–45 cm) spacing. The colorful spring tip display complements the late-summer bloom of other heather cultivars in mixed heather plantings. Mass plantings that combine 'Spring Torch' with brick-red 'Firefly' and with gold-leaved and green-leaved cultivars produce a tapestry of color and texture. Low ground cover on acidic banks is another use. Container culture requires 2 gallon (8 L) or larger pots with ericaceous compost.How to Identify
Appearance
Size & Dimensions
Height10" - 1'3"
Width/Spread1'3" - 1'6"
Reaches mature size in approximately 3 years
Bloom Information
Short racemes of small bell-shaped mauve-pink flowers 3–4 mm long open along the upper stems in August–September. Bloom duration is 3–4 weeks. Spent flower spikes persist on the stems through winter if not sheared. Flowers are visited by bees. The foliage tip display in spring is the primary ornamental feature, not the summer bloom.Detailed Descriptions
Flower Description
Mauve-pink, small bell-shaped, 3-4 mm in short racemesFoliage Description
Medium green base; spring tips cream, pink, coral, orange; slight bronze winter tintGrowing Conditions
Sun Requirements
Requires 6-10 hours of direct sunlight daily
• Full Sun: 6+ hours of direct sunlight
• Partial Shade: 3-6 hours of direct sunlight
• Full Shade: Less than 3 hours of direct sunlight
Care & Maintenance
Care Guide
Grows in full sun in well-drained acidic soil at pH 4.5–5.5, tolerating sand and peat substrates. Hardy to zone 4. Alkaline soils cause chlorosis and rapid decline; consistent soil moisture is needed without waterlogging. Mulch 1–2 inches (2.5–5 cm) deep with pine bark or another acidic organic material. Cool-summer maritime climates (Pacific Northwest, United Kingdom, Northwestern Europe) suit the species better than hot humid continental climates. Phytophthora root rot and heat stress cause decline in poorly drained or hot sites. Good air circulation reduces fungal pressure. No serious insect pest problems are reported.Pruning
Shear lightly in early spring (March–April) before or just as the colorful new tips begin to emerge, removing the spent flower spikes and the top 1–2 inches (2.5–5 cm) of growth; this timing preserves the fresh tip display for the current season. Annual shearing holds the dense compact form and prevents legginess. Do not cut into bare old wood: Calluna does not regenerate from leafless stems.Pruning Schedule
J
F
M
A
M
J
J
A
S
O
N
D
early spring
Maintenance Level
lowContainer Growing
✓ Suitable for container growing
Minimum container size: 2 gallons