Botrychium matricariifolium: complete guide

Overview

Botrychium matricariifolium, commonly called daisy-leaf grape fern, branched moonwort, or daisy-leaf moonwort, is a small, rare fern native to North America and Europe. This species belongs to the Ophioglossaceae family and is distinguished by its delicate, daisy-like foliage and distinctive reproductive structures. The plant grows in moist, partially shaded woodland settings and is less common than related moonwort species.

Botrychium matricariifolium is a frost-hardy, native fern suitable for shade gardens and natural woodland restoration projects, though cultivation remains challenging.

Appearance and characteristics

Botrychium matricariifolium is an extremely small fern, typically only 10-30 centimeters tall. The plant grows in clusters of 1-3 fronds per crown. The most striking feature is its division into two completely different segments: sterile and fertile.

Sterile segment: This portion is green and leaf-like, with finely branched divisions resembling chamomile leaves, hence the scientific name "matricariifolium." The foliage is deeply divided and gives the plant a delicate, lacy appearance.

Fertile segment: This reproductive structure grows above the sterile segment. It consists of a branched spike with numerous sporangia (spore-containing cases). This fertile portion is typically brownish-yellow.

Roots: The plant has short, dark rootlets that grow in surface soil layers.

Ideal location

Botrychium matricariifolium thrives only in specific conditions:

• Shade: Partial to full shade is essential
• Habitat: Woodland settings, preferably under deciduous trees
• Humidity: Moist environment is critical
• Temperature: Cooler climates strongly preferred
• Protection: Sheltered woodland edges ideal

Soil

Soil is critical for this delicate fern:

• Rich, humus-laden, nutrient-rich soil
• Well-draining yet moisture-retentive
• Acidic to neutral pH (5.5-7.0)
• High organic matter content
• Forest soil with abundant leaf litter ideal

Recommendation: Amend soil liberally with leaf mold and aged compost.

Watering

Watering requires careful attention:

• Consistent moisture essential
• Soil must never completely dry out
• Foliage misting helps during dry periods
• Summer drought weakens the plant
• Winter moisture crucial in cold climates

Growth patterns

Botrychium matricariifolium has an unconventional growth cycle:

• Young fronds emerge in spring
• Growth is exceedingly slow; plants take multiple seasons to mature
• Spore ripening occurs in summer/fall
• Spores are released in autumn

Note: Propagation from spores is exceptionally difficult; most spores are non-viable.

Maintenance calendar

March-April: Plant emerges from winter dormancy. Moisture monitoring essential.

May-June: Vegetative growth. Fronds expand. No fertilizing needed.

July-August: Reproductive structures mature. Fertile segment develops.

September-October: Spores ripen. Plant begins senescence.

November-February: Plant dormant. Minimal moisture provision.

Winter hardiness

Botrychium matricariifolium is highly frost-hardy:

• USDA hardiness zones: 3-8
• Tolerates temperatures down to -30 degrees Celsius
• Snow provides protection against extreme cold
• Excellent for northern climates

Conservation status

This fern has concerning rarity in many regions:

• Listed as rare in Great Britain
• Extinct in Netherlands and Belgium
• Still relatively common in North America
• Protected in some European countries
• Removal from wild not recommended

Companion plants

Botrychium matricariifolium thrives with:

• Other woodland ferns (Phyllitis, Dryopteris)
• Shade plants (Helleborus, Hepatica)
• Groundcover plants (Ajuga, Vinca minor)
• Hosta and other shade-tolerant species
• Moss-rich gardens

Propagation

Propagation is problematic:

• Spores have very specific germination requirements
• Most spores are non-viable
• Cultivation from spores is virtually impossible
• Growth from spores is extremely slow
• Commercially available plants are rarely seen

Recommendation: Purchase only from established growers. Harvesting from wild is unethical and illegal in many countries.

Final thoughts

Botrychium matricariifolium is a fascinating, frost-hardy fern for specialized woodland gardens. Though exceptionally rare and challenging to cultivate, it offers unique botanical interest. For serious fern collectors, it can be a rewarding addition, but only when sourced from sustainable growers. Its preference for moist, woodland-rich environments with acidic soil means this plant requires carefully managed habitat. Respect for this rare species and its natural occurrence is crucial for its conservation.