Thunderbolt® Box Honeysuckle

Thunderbolt® Box Honeysuckle is hardy in USDA zones 5 through 9 and grows best in part sun, which encourages dense growth while keeping its golden color vivid. It is adaptable to most well-drained soils and appreciates consistent moisture while establishing.

Planting

1. Choose a site with part sun — a few hours of morning light with afternoon shade brings out the brightest foliage color while protecting leaves from scorch.
2. Work the planting area to ensure good drainage; this shrub dislikes soggy, waterlogged soil.
3. Dig a hole as deep as the root ball and about twice as wide to loosen the surrounding soil.
4. Set the plant so the top of the root ball sits level with the surrounding soil, then backfill, firm gently, and water in thoroughly to settle the roots.
5. Apply a 2 to 3 inch layer of mulch over the root zone to conserve moisture and moderate soil temperature, keeping the mulch pulled back a couple of inches from the stems.

Care & maintenance

• Water. Keep the soil evenly moist during the first growing season. Once established, it tolerates average moisture but performs best with regular water during heat and drought.
• Feed. A balanced, slow-release shrub fertilizer applied once in early spring is plenty; avoid heavy feeding, which produces soft, floppy growth.
• Light. Part sun is ideal. Too much deep shade thins the habit and dulls the gold; harsh all-day sun can scorch the foliage in hot climates.
• Prune. This shrub is grown for foliage and responds well to shearing. Trim lightly in late spring or early summer to shape, and again in mid-summer if you want a crisp hedge. Avoid hard pruning late in the season so new growth can harden before winter.
• Mulch & winter care. Maintain a steady mulch layer year-round. In the colder end of its range, an extra layer of mulch in fall helps protect roots; some leaf bronzing in winter cold is normal and recovers in spring.
• Pests & disease. Box honeysuckle is generally trouble-free. Good air circulation and well-drained soil prevent most issues; watch for occasional aphids on tender new growth and rinse them off as needed.

Is Thunderbolt® Box Honeysuckle evergreen?

Yes. It holds its small, glossy, golden leaves through the year and is grown primarily for that evergreen foliage. In the colder parts of zones 5 through 9 it may be semi-evergreen, dropping some leaves or bronzing in hard winters, then flushing fresh color again in spring.

What gives it the best gold color?

Light is the key. Part sun — bright light with some protection from intense afternoon heat — produces the most vivid golden foliage. In deep shade the leaves turn more lime-green and the habit grows looser; in scorching all-day sun the foliage can bleach or burn.

When does it flower, and is it grown for the blooms?

Small, fragrant cream-white flowers appear in late spring. They are pleasant and lightly scented but modest in size — this shrub is chosen for its foliage, not a showy floral display.

When and how should I prune it?

Because it is grown for foliage, you can shear it freely to shape. Trim in late spring or early summer, and again in mid-summer for a tidy hedge. Avoid hard pruning late in the season so new growth has time to firm up before cold weather.

Can I use it as a hedge or in a container?

Both work well. Its dense, naturally tidy 3 to 4 foot habit and fine texture make it an excellent low informal hedge or boxwood alternative, and its compact size suits large containers where the golden color stands out on a patio or entryway.

Is it deer resistant?

Box honeysuckle is generally not a favorite of deer and tends to be left alone in most landscapes, though no plant is fully deer-proof where browsing pressure is high.