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Huperzia lucidula

shining firmoss

Lycopodiaceae Eastern North America

Deer Resistant

Native to North America

SunPart Shade – Full Shade

WaterMedium

HardinessZones 3–7

Overview

Huperzia lucidula is an evergreen clubmoss, a low spore-bearing plant rather than a flowering one, growing 4-8 inches (10-20 cm) tall from creeping, branching stems that root along the forest floor. The stems are clothed in shiny, dark green, lance-shaped leaves about 0.3-0.4 inch (8-10 mm) long, arranged in several ranks and often slightly toothed, with the tips of the shoots turning upward. It reproduces by spores borne in kidney-shaped sporangia in the upper leaf axils, and also spreads vegetatively by small bud-like gemmae that detach and root nearby. New growth shows annual constrictions along the stems, marking each season. It is native to cool, moist, shaded woodlands across eastern North America, where it grows on acidic, humus-rich soils, often near streams and on shaded slopes. The plant depends on cool, damp, deeply shaded conditions and acidic soil, and it does not tolerate sun, drought, or disturbance. Because it relies on specific soil fungi, it is difficult to transplant and rarely survives in gardens, persisting mainly in intact woodland.

Native Range

Native to eastern North America, from eastern Canada south through the Appalachian Mountains and Midwest to Georgia. It grows on the floor of cool, moist, acidic woodlands, on shaded slopes, and near streams.

Suggested Uses

Used in shaded native and woodland plantings, fern and moss gardens, and naturalistic settings with cool, moist, acidic soil. It suits deep shade where little else grows as a low evergreen groundcover. Its specialized needs make it suited to intact woodland and restoration sites rather than ordinary beds.

How to Identify

Recognized by low, creeping evergreen stems clothed in shiny, dark green, lance-shaped leaves that turn upward at the shoot tips. The leaves are arranged in many ranks and are often minutely toothed, giving the whole plant a glossy look. Yellowish, kidney-shaped spore cases sit in the upper leaf axils rather than in cone-like spikes, separating it from related clubmosses that bear distinct strobili.

Appearance

Size & Dimensions

Height4" - 8"

Width/Spread6" - 1'

Reaches mature size in approximately 5 years

Colors

Foliage Colors

green

Fall Foliage Colors

no change

Bloom Information

This clubmoss does not flower or set seed. Spores are released from kidney-shaped sporangia in the upper leaf axils, mostly in late summer and fall. The plant also spreads through the year by detachable bud-like gemmae near the shoot tips.

Detailed Descriptions

Foliage Description

glossy dark green

Growing Conditions

Sun Requirements

SunPartial Shade SunFull Shade

Tolerates up to 3 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

Soil Requirements

pH Range4.0 - 5.5(Acidic)

357912

Soil Types

loam peat

Drainagemoist

Water & Climate

Water Needs

Medium

Frost Tolerance

hardy

Time to Maturity

slow

Care & Maintenance

Care Guide

Grows in deep to partial shade on cool, moist, acidic soils rich in organic matter, with a pH of about 4.0-5.5. Constant moisture, shade, and high humidity are needed, since the plant scorches and dries out in sun or wind. It is hardy in USDA zones 3-7 and keeps its foliage through winter. The shallow, creeping stems benefit from a permanent cover of leaf litter. Because it depends on soil fungi and undisturbed conditions, it transplants poorly and is slow to establish. It declines where soils dry out, are limed, or are disturbed.

Pruning

No pruning is needed. Fallen leaves and debris can be left in place to maintain the cool, moist, acidic conditions the plant requires. Disturbance of the creeping stems is avoided, since they re-root and spread slowly.