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Ajuga Catlin's Giant
Ajuga reptans 'Catlin's Giant'
Ajuga Catlin’s Giant is the one I’d choose when you want Ajuga with more muscle and larger foliage. It gives you that dependable low ground cover habit, but the bigger bronze-green leaves make it feel bolder and more substantial in the landscape. I especially like it under shrubs and along shaded edges where grass struggles, because it fills in quickly, brings spring flower color, and gives the bed a finished look with very little maintenance.
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Bold Large-Leaf Ajuga for Shaded Ground Cover
Larger foliage with rich bronze-green color.
Ajuga Catlin’s Giant forms a dense mat of large, glossy bronze-green foliage that brings bold texture to shaded and partly shaded garden beds. Its larger leaves give it a stronger presence than many smaller Ajuga varieties, making it especially useful where homeowners want quick coverage and visible ground-level color.
Blue spring flowers brighten the garden.
In spring, blue to deep-blue flower spikes rise above the foliage, creating a beautiful seasonal contrast. The blooms add color at a time when shade gardens are waking up and help support pollinators, including bees, butterflies, and hummingbirds.
A strong ground cover where grass struggles.
Catlin’s Giant Ajuga is especially useful in areas where turfgrass is difficult to maintain, including under trees, along woodland edges, beneath shrubs, and in shaded borders. Its spreading habit helps cover bare soil, soften hard edges, and create a finished, planted look.
Evergreen to semi-evergreen and low maintenance.
This Ajuga is evergreen to semi-evergreen in many climates, helping beds look fuller beyond the main growing season. Once established, it requires little maintenance beyond occasional edging, runner control, and trimming spent flower spikes after bloom.
Deer-resistant coverage for shade, slopes, and containers.
Ajuga Catlin’s Giant is considered deer-resistant and rabbit-resistant, making it a practical option for gardens with browsing pressure. Use it as a bold ground cover, a slope stabilizer, a woodland garden plant, a path-edge accent, or a spiller in mixed shade containers.
| Hardiness Zone: | 3-9 |
|---|---|
| Mature Height: | Approximately 6 to 10 inches tall in bloom |
| Mature Width: | 12 to 24 inches wide; can spread wider over time |
| Sunlight | Part shade to full shade; tolerates full sun with consistent moisture |
| Soil | Average to moist, well-drained soil; adapts to a range of soils but dislikes excessively dry conditions |
| Water | Water regularly after planting; prefers even moisture and should not dry out completely for long period |
| Bloom Time / Color | Spring, often April to May; blue to deep blue flower spikes |
| Foliage | Evergreen to semi-evergreen, Large glossy bronze-green to bronzy-purple foliage |
| Ornamental Features | Large leaves, bronze-green foliage, blue spring flowers, dense spreading mat, bold ground-cover texture |
| Wildlife Value | Spring flowers attract bees, butterflies, hummingbirds, and other pollinators |
| Resistance | Deer resistant, rabbit resistant, shade tolerant, and generally low maintenance |
| Landscape Uses | Shade ground cover, under trees, under shrubs, woodland gardens, foundation beds, slopes, erosion control, edging, rock gardens, mixed containers, and low-traffic lawn-alternative areas |
How to Care for Ajuga Catlin's Giant
Be sure to read our planting instructions to ensure a healthy and happy Ajuga Catlin's Giant for years to come!
How should I plant Ajuga Catlin’s Giant?
Plant Ajuga Catlin’s Giant in part shade to full shade with average to moist, well-drained soil. It can tolerate full sun when moisture is consistent, but in warmer climates, protection from hot afternoon sun helps keep the foliage looking its best. Dig a hole slightly wider than the root ball and set the crown level with the surrounding soil. Backfill, water deeply, and space plants about 12 to 18 inches apart for ground cover plantings, or closer if faster coverage is desired.
How often should I water Ajuga Catlin’s Giant after planting?
Water Ajuga Catlin’s Giant regularly during the first growing season while the roots establish and the plants begin to spread. Keep the soil evenly moist, especially during hot, dry weather or when planting in sunnier locations. Once established, Ajuga can tolerate a wider range of conditions, but Catlin’s Giant performs best when the soil does not dry out completely for long periods. In containers, slopes, or exposed sites, check moisture more often and water when the top inch of soil begins to dry.
When should I fertilize Ajuga Catlin’s Giant?
Fertilize Ajuga Catlin’s Giant lightly in spring if growth appears weak or the soil is poor. In most garden beds, a thin layer of compost or a gentle, balanced, slow-release fertilizer is enough to support healthy foliage and spring flowering. Avoid heavy feeding, which can push soft, overly vigorous growth and make the planting less tidy. Catlin’s Giant Ajuga is naturally low maintenance and usually performs well without frequent fertilizing.
When and how should I prune Ajuga Catlin’s Giant?
Prune Ajuga Catlin’s Giant after flowering if the spent bloom spikes look untidy. You can trim flower stems by hand, lightly shear established patches, or mow high over larger ground cover areas to refresh the foliage. Throughout the growing season, edge or pull runners as needed to keep the planting within its intended space. Because Catlin’s Giant can be vigorous, regular edging is helpful near lawns, pathways, and delicate neighboring perennials.
