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A Forager’s Year

No. 10

Plant of the month: February

Spicebush

Lindera benzoin

northern spicebush

Leaves & tender stems twigs, young leaves and early flowers, for tea (berries covered separately)

Drawing: Britton & Brown, Illustrated Flora (1913)

Find
Common in the right habitat
Effort
Quick kitchen prep
ID risk
Beginner
Origin
native
Uses
  • Tea

Season

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

in season peak

What these mean

Find

1 Everywhere · 2 Common in the right habitat · 3 Patchy · 4 Elusive. This is about how much there is, not whether you may pick it. It is based on iNaturalist sightings within 25 km (about 15 miles) of downtown DC, counted on October 3, 2026. The four rules that each plant’s “Find” reason refers to: (A) the estimate is the confirmed sightings, plus the unconfirmed ones (scaled down where the plant has lookalikes in its genus), plus the sightings marked as planted; (B) the tier by estimate: 1,500 or more is tier 1, 250–1,499 tier 2, 50–249 tier 3, under 50 tier 4; (C) tier 1, Everywhere, also needs a source saying the plant is common in lawns, sidewalks, yards or gardens, vacant lots or towns, or at least one DC street tree of it per km of sidewalk, otherwise it is tier 2; (D) if a reliable source says the plant is rare in this region, or that wild plants rarely bear the harvest, only planted sightings count. iNaturalist is a website and phone app where people post photos of the plants and animals they see. A sighting is “research grade” when other users have confirmed what it is; “needs ID” sightings are not confirmed yet, and “cultivated” ones are marked as planted.

Effort

1 Grab & eat · 2 Quick kitchen prep (under about 30 minutes) · 3 Real work (hours, or cooking needed for safety) · 4 Project (days or equipment). Scored on the simplest worthwhile use; each plant’s page says why.

ID risk

How hard it is to harvest safely. Beginner: no dangerous lookalike, and the edible part is not easily confused with a toxic part. Careful: a toxic lookalike, or toxic parts that end up in the harvest unless removed (for example elderberry stems, unripe ground cherries), or other parts of the plant rated medium-or-higher toxicity, with reliable features to separate them. Expert only: a potentially deadly lookalike that is hard to separate, or (for not-recommended harvests like pokeweed) a plant whose safe preparation can’t be guaranteed. Toxic parts that are obviously separate and thrown away anyway (pits, seeds, skins) don’t raise it; the Toxic parts mark carries that warning.

Native or not, and the invader stars

Origin is where the plant comes from: native, non-native, or mixed (the harvest covers both). The stars rate plants on invasive plant lists: ★★★ Virginia DCR “High” or Maryland prohibited invasive · ★★ Virginia “Medium” · ★ Virginia “Low” · ☆ listed only by the Maryland Invasive Species Council or the Mid-Atlantic Plant Invaders guide (advisory) · no stars: native or not listed.

Seasons

Start, peak and end are given in thirds of a month: early, mid or late. A plant counts as in season for a month if it is in season at any point in that month. Some greens and roots have a second window, in spring or fall; their page shows each window. A season that runs across New Year is shown as one window.

What it looks like

A native understory shrub whose smooth, light-green, oval leaves, twigs and bark smell spicy when scratched or crushed. Tiny yellow flower clusters line the bare branches in early spring before leaf-out.

Safety

No toxicity noted in sources. Use only twig tips and prune sparingly. Confirm the spicy smell; several other shrubs have similar oval leaves but no aroma.

ID risk
Beginner
Why
No toxic lookalike is named; several shrubs have similar oval leaves, but only spicebush has the strong spicy aroma.
Soil risk
higher
ID risk: what this means

How hard it is to harvest safely. Beginner: no dangerous lookalike, and the edible part is not easily confused with a toxic part. Careful: a toxic lookalike, or toxic parts that end up in the harvest unless removed (for example elderberry stems, unripe ground cherries), or other parts of the plant rated medium-or-higher toxicity, with reliable features to separate them. Expert only: a potentially deadly lookalike that is hard to separate, or (for not-recommended harvests like pokeweed) a plant whose safe preparation can’t be guaranteed. Toxic parts that are obviously separate and thrown away anyway (pits, seeds, skins) don’t raise it; the Toxic parts mark carries that warning.

Soil risk: what this means

Based on the part you eat, following the urban-soil lead guidance on the Field safety page: higher for greens, shoots and roots; moderate for flowers; low for fruit, nuts and sap.

Field safety for every outing (poison ivy, ticks, soil, and more)

When to pick

Window 1

Starts
early Mar
Peak
mid Mar–late Mar
Ends
late May

Window 2

Starts
early Jun
Peak
–
Ends
late Feb

Flowers and young leaves make the best tea in spring: spicebush blooms around DC from early March, peaking in the second half of March (iNaturalist; Virginia Wildflowers), and the Missouri Department of Conservation’s Wild Edibles book gives March–May. Twigs and bark are also named as tea material (Missouri Department of Conservation; Lehigh Gap Nature Center). No source gives a season for them, but they are on the shrub all year, so they are the option outside spring; the June–February window is an estimate on that basis.

How the dates were worked out

Every start, peak and end was re-checked in October 2026. “Sourced” means a source opened during the check states that timing for the DC or Mid-Atlantic area. “Estimated” means no source states it exactly; the reason, the evidence and the source links are under “How the dates were worked out” on each plant’s page. Peaks are often estimated, because few sources name a peak. iNaturalist evidence means research-grade sightings near DC, by month, of the plant at that stage (for example, in fruit). iNaturalist is a website and phone app where people post photos of the plants and animals they see. A sighting is “research grade” when other users have confirmed what it is; “needs ID” sightings are not confirmed yet, and “cultivated” ones are marked as planted.

Season basis: estimated: end (window 1), start (window 2), end (window 2)

Window 1: Start

sourced

Window 1: Peak

sourced

Window 1: End

estimated: Missouri range; young leaves are tender for a few weeks after leaf-out in April.

Window 1: Evidence

start: iNaturalist DC flowering obs by week: 9:3, 10:8, 11:26 (from about Feb 26). NC State: blooms March–April. Lehigh Gap Nature Center (eastern PA): flowers March and April. | peak: iNaturalist DC flowering obs peak at weeks 12-13 (70, 60; about Mar 19 – Apr 1). Virginia Wildflowers: 'full bloom at the end of March and beginning of April'. | end: Missouri Wild Edibles: collection March–May (flowers, twig tips, leaves). Lehigh Gap Nature Center: young leaves, twigs and bark for tea.

Window 2: Start

estimated: Twigs and bark are present all year, so twig tea outside spring is inferred; no source names summer, fall or winter months.

Window 2: Peak

Window 2: End

estimated: Winter twig use is inferred; runs until flowering resumes in March.

Window 2: Evidence

start: Missouri Wild Edibles and MDC: tea from flowers, twig tips, leaves or bark. Lehigh Gap Nature Center: young leaves, twigs and bark. | end: Twigs and bark named as tea material.

Where to look

Moist floodplain understory in Rock Creek Park and along the C&O Canal, where you can learn it but not pick it; take twigs from private woodlots with permission.

Habitats
floodplain & stream-valley forest
Habitats: what this means

Listed where the plant’s own sources place it in that habitat. “Disturbed ground & waste places” means a cited source places it on disturbed areas, sites, soil or ground, on waste places or waste ground, on construction or abandoned building sites (old home sites count), on rubble or in strip mines. When the source gives examples of the disturbed places, at least one example must be of that kind. Examples that do not count: natural or forestry disturbance (treefall gaps, fire, windthrow, flood scour, old riverbanks and creeks, clear-cuts); roadsides, railroads and rights-of-way; and abandoned fields, pastures and farmland, which are “Old fields & meadows”. “Vacant lots” only where a source says vacant or empty lots.

Most-logged places

None of the most-logged places allows picking.

No picking here (5 places)
  • Rock Creek Park

    441 sightings · Legal to pick: no · see them on iNaturalist

    Look but don’t pick: Rock Creek Park’s compendium bans gathering any fruit, nut, berry, seed or greenery.

  • C&O Canal NHP (towpath, Georgetown to Great Falls MD and beyond)

    201 sightings · Legal to pick: no · see them on iNaturalist

    Look but don’t pick: the C&O Canal compendium covers only edible fruits, nuts, berries and mushrooms, and NPS parks can never designate leaves, flowers, roots or sap. Of these, 81 are at Carderock.

  • Glover-Archbold Park (Rock Creek Park unit)

    127 sightings · Legal to pick: no · see them on iNaturalist

    Look but don’t pick: Rock Creek Park’s compendium bans gathering any fruit, nut, berry, seed or greenery.

  • Dumbarton Oaks Park

    120 sightings · Legal to pick: no · see them on iNaturalist

    Look but don’t pick: Rock Creek Park’s compendium bans gathering any fruit, nut, berry, seed or greenery.

  • Riverbend Park

    115 sightings · Legal to pick: no · see them on iNaturalist

    Look but don’t pick: Fairfax County parks ban removing any plant part without written permission.

Most-logged places: what this means

The places with the most research-grade iNaturalist sightings within 25 km of downtown DC (re-counted in October 2026 over every named place, campuses, condominiums and private grounds included), each marked legal to pick or not. A sighting inside several named places counts once, for the smallest of them, but a sighting inside a National Park Service park never counts for a private, campus or unchecked place. iNaturalist shows where people walk and log plants, not true abundance. Private campuses, condominiums, museums, estates and utility land (Pepco’s power-line land near Sligo Creek) are marked “no” (pick only with the owner’s permission); public university campuses, city parks and other places whose picking rules were not checked (county stormwater land, the U.S. Capitol Grounds, Greenbelt’s North Woods, federal facilities such as the National Zoo) are “unknown”. A place needs at least 2 sightings, so plants with very few sightings (rugosa rose) have no places. No most-logged places are named for at-risk plants (ramps, chinquapin, American chestnut); chinquapin’s page names Mason Neck State Park, where picking is legal, and asks you to leave most nuts. For some places, mostly Rock Creek Park, the iNaturalist map shows more sightings than the count here, because a map link cannot leave out exactly the sightings credited to another place. iNaturalist is a website and phone app where people post photos of the plants and animals they see. A sighting is “research grade” when other users have confirmed what it is; “needs ID” sightings are not confirmed yet, and “cultivated” ones are marked as planted.

Ways to use it

  • twig tea (chop twigs, steep about 1 tsp per cup for a few minutes)
  • flower and young-leaf tea

Keeping

Dry within a few days for tea; dried, they keep up to a year in a sealed jar.

Use within
within a few days
Keeps fresh
Leaves and flowers: a few days in a bag in the fridge (general guidance for fresh herbs). Twigs are woodier and keep longer, but dry them for storage.
Keeping basis
general guidance for its type

Ways to keep it

  • Dry as researched: dry/dehydrate (tea or seasoning); canning: n/a (not shelf-canned)

    NCHFP: dehydrate at 95-115°F (up to 125°F in humid weather) until leaves crumble, or hang/bag-dry; store airtight in a cool, dark, dry place. Ohio State: best quality for up to a year. Chop twigs before drying so they are ready to steep.

Canning: what this means

Shelf-stable canning, three levels. Lab-tested: a lab-tested recipe from the National Center for Home Food Preservation (NCHFP) or Oregon State covers this fruit and product, or a generic recipe for its kind (the line says so, for example chokeberry). Extension recipe: a published Extension recipe (University of Alaska Fairbanks, written for Alaska species; University of Maine’s dandelion jelly), or a process that is safe only with a pH meter; follow it exactly, never improvise. No tested recipe: refrigerate or freeze, don’t can. “Hot-bottled syrup” = maple and walnut syrup, which keep when bottled hot at full syrup density. The Canning line names the exact product each source covers, for example “whole berries” or “juice”; a product not named there (such as juice from a berry with only a whole-berry recipe) has no tested recipe.

Keeping basis: what this means

“Specific to this plant” or “general guidance for its type” (for example NCHFP guidance for leafy greens applied to a wild green).

Nutrition

No nutrient measurements were found of the fresh part you eat.

What was searched
  • Europe PMC: searched 2026-10-09, 48 records; 48 after removing duplicates across databases; 0 candidates by title and abstract; 0 read in full; 0 with figures used
  • PubMed: searched 2026-10-09, 7 records; 7 after removing duplicates across databases; 0 candidates by title and abstract; 0 read in full; 0 with figures used
  • OpenAlex: searched 2026-10-09, 56 records; 54 after removing duplicates across databases; 0 candidates by title and abstract; 0 read in full; 0 with figures used
  • Crossref: searched 2026-10-09, 48 records; 48 after removing duplicates across databases; 1 candidates by title and abstract; 0 read in full; 0 with figures used
  • J-STAGE (Japan): searched 2026-10-09, 12 records; 12 after removing duplicates across databases; 0 candidates by title and abstract; 0 read in full; 0 with figures used
  • USDA FoodData Central (online search): searched 2026-10-09, 0 records; 0 after removing duplicates across databases; 0 candidates by title and abstract; 0 read in full; 0 with figures used
  • USDA FoodData Central (downloaded SR Legacy 2018 and Foundation 2026 tables): searched 2026-10-09, 0 records; 0 after removing duplicates across databases; 0 candidates by title and abstract; 0 read in full; 0 with figures used
  • All databases together: 171 records from all databases, 145 unique, 1 candidates, 0 read, 0 used; 1 not read (paywalled 1, blocked automated access 0, not online 0)
  • KCI (Korea), CNKI (China), SciELO (Latin America), CORE, USDA’s AGRICOLA and PubAg, Google Scholar, and national food composition tables other than USDA’s: not searched (October 2026).

The counts are of papers new in this search. Sources found before this search (such as USDA’s entries) were not counted again.

Each database was searched for the plant’s scientific and common names together with nutrient words (composition, nutrient, vitamin, mineral, fiber, protein and others), in titles and abstracts only. Papers that don’t name the plant there, and words not on the list (such as fat, energy and moisture), were missed unless another paper led to them; the AI researchers found some that way.

Found but not read (1)

Collected in October 2026 by AI research agents, following written rules; the calendar’s figures were then checked independently.

Native or not

Origin
native
Native range
eastern North America
Virginia invasive rank
not listed
Maryland invasive status
not listed
Native or not, and the invader stars: what this means

Origin is where the plant comes from: native, non-native, or mixed (the harvest covers both). The stars rate plants on invasive plant lists: ★★★ Virginia DCR “High” or Maryland prohibited invasive · ★★ Virginia “Medium” · ★ Virginia “Low” · ☆ listed only by the Maryland Invasive Species Council or the Mid-Atlantic Plant Invaders guide (advisory) · no stars: native or not listed.

Virginia DCR, Virginia Invasive Plant Species List (effective September 2024), verbatim: "Under the DCR Invasive Species Assessment Protocol, approved by the Virginia Invasive Species Working Group, January 2024, species were ranked as exhibiting high, medium or low levels of invasiveness based on their threat to natural communities and native species. Invasiveness rank is higher for species that: • Alter ecosystem processes, such as succession, hydrology or fire regime. • Are capable of invading undisturbed natural communities. • Cause substantial impacts on rare or vulnerable species or natural communities or high-quality examples of more common communities. • Are found widely distributed and generally abundant where present. • Disperse readily to new areas. • Are difficult to control." The list also states: "The list is for educational purposes only and has no regulatory authority."

Maryland Department of Agriculture, Maryland Prohibited Invasive Plant Law and Regulations page, verbatim: "Plants on the Maryland Prohibited Invasive Plant List may not be added to stock after the effective date and should not be sold after their phase-out period ends."

No official DC invasive plant list was found.

How the ratings were set

Find
Common in the right habitat Estimate 4,753 = 3,502 research-grade iNaturalist sightings within 25 km + 1,193 needs-ID sightings counted in full (northern spicebush is the only Lindera with research-grade sightings here) + 58 'cultivated' (planted) sightings (rule A); that is tier 1 by count (rule B). Rule C: none of its sources says it is common in, or a weed of, an everyday place (lawns, sidewalks, yards or gardens, vacant lots, towns), so it cannot be tier 1 (Everywhere). Final tier 2.
Effort
Quick kitchen prep Snap or chop a few twig tips and steep or simmer about 1 tsp per cup for tea.
Find: what this means

1 Everywhere · 2 Common in the right habitat · 3 Patchy · 4 Elusive. This is about how much there is, not whether you may pick it. It is based on iNaturalist sightings within 25 km (about 15 miles) of downtown DC, counted on October 3, 2026. The four rules that each plant’s “Find” reason refers to: (A) the estimate is the confirmed sightings, plus the unconfirmed ones (scaled down where the plant has lookalikes in its genus), plus the sightings marked as planted; (B) the tier by estimate: 1,500 or more is tier 1, 250–1,499 tier 2, 50–249 tier 3, under 50 tier 4; (C) tier 1, Everywhere, also needs a source saying the plant is common in lawns, sidewalks, yards or gardens, vacant lots or towns, or at least one DC street tree of it per km of sidewalk, otherwise it is tier 2; (D) if a reliable source says the plant is rare in this region, or that wild plants rarely bear the harvest, only planted sightings count. iNaturalist is a website and phone app where people post photos of the plants and animals they see. A sighting is “research grade” when other users have confirmed what it is; “needs ID” sightings are not confirmed yet, and “cultivated” ones are marked as planted.

Effort: what this means

1 Grab & eat · 2 Quick kitchen prep (under about 30 minutes) · 3 Real work (hours, or cooking needed for safety) · 4 Project (days or equipment). Scored on the simplest worthwhile use; each plant’s page says why.

Sources

18 sources, each linked to the original.

  1. Rock Creek Park Superintendent’s Compendium National Park ServiceBacks up: picking rules
  2. Lindera benzoin (Northern Spicebush) NC State Extension Gardener Plant ToolboxBacks up: description, uses, habitat, season
  3. iNaturalist research-grade observations of Lindera benzoin within 25 km of downtown DC iNaturalistBacks up: findability
  4. Tuliptree Small-Stream Floodplain Forest at Rock Creek Park: plants and animals Explore Natural Communities (NatureServe with the National Park Service)Backs up: habitat
  5. Food Preservation: Preserving Herbs—Freezing and Drying (HYG-5360) Ohio State University ExtensionBacks up: keeping
  6. Herbs (drying) National Center for Home Food Preservation (University of Georgia)Backs up: keeping
  7. How to Make Flower Petal Jelly Safely University of Maine Cooperative ExtensionBacks up: keeping
  8. USDA PLANTS Database: Lindera benzoin (LIBE3), native status USDA NRCSBacks up: native or invasive status
  9. Virginia Invasive Plant Species List (effective date: September 2024) Virginia Department of Conservation and Recreation, Division of Natural HeritageBacks up: native or invasive status
  10. Maryland Prohibited Invasive Plant Law and Regulations (Maryland Prohibited Invasive Plant List, updated January 2026; additions effective July 15, 2026; 'Next Plants To Be Assessed' 2026-2027) Maryland Department of Agriculture, Plant Protection & Weed ManagementBacks up: native or invasive status
  11. Non-Native Invasive Terrestrial Plant Species in the State of Maryland (updates approved through the April 18, 2024 MISC meeting) Maryland Invasive Species CouncilBacks up: native or invasive status
  12. Plant Invaders of Mid-Atlantic Natural Areas, Field Guide (Swearingen & Fulton, 2022; successor to the NPS/USFWS 5th ed., 2017) Mid-Atlantic Invasive Plant Council / Passiflora Press (hosted by Bugwood/Mid-Atlantic Invaders Tool)Backs up: native or invasive status
  13. Invasive Plants in the District DC Department of Energy & EnvironmentBacks up: native or invasive status
  14. iNaturalist research-grade observations of Lindera benzoin within 25 km of Washington, DC, by month (flowering) iNaturalistBacks up: season
  15. Spicebush (Apr 1, 2024) Virginia WildflowersBacks up: season, description
  16. Wild Edibles of Missouri (Jan Phillips, 2nd ed.) Missouri Department of ConservationBacks up: season, uses
  17. Spicebush (Eastern PA Phenology Project fact sheet) Lehigh Gap Nature CenterBacks up: season, uses
  18. Spicebush (field guide) Missouri Department of ConservationBacks up: uses, season, habitat, description