Not recommended. Not on the calendar. Read the safety warning first. Ways to use it, keeping and nutrition are left off this page.
Not on the calendar
Common milkweed
Asclepias syriaca
Fruit very young, firm immature pods (no more than about 2/3 grown, white silk inside), cooked
Drawing: Britton & Brown, Illustrated Flora (1913)
- Find
- Common in the right habitat
- Effort
- Real work
- ID risk
- Careful
- Origin
- native
- Safety marks
- Deadly lookalike
- Toxic parts
- Cook first
Season
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- 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.
Safety marks and flags
Deadly lookalike / Toxic lookalike: a cited source names a lookalike of that danger. Deadly means a source says eating it may be fatal or calls it deadly, or NC State rates it high severity with life-threatening symptoms (sources sometimes disagree; for example Virginia creeper). Each plant’s Lookalikes list says how to tell them apart; “harmless (may be edible)” lookalikes are listed so you know a mix-up isn’t dangerous. Cook first: cooking is needed for safety (for daylilies it is a precaution, not a sourced requirement). Eat in moderation: a source says to limit quantity or frequency (for example oxalates in sorrels and dock, ginkgotoxin, safrole). Spray risk: a source says the plant is commonly treated with herbicide in parks or lawns (invasive control, lawn weeds) or, for ginkgo, sprayed to stop fruiting. Contamination: a source says the plant concentrates pollutants. Each plant’s Safety flags list gives the details and sources.
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.
Safety
Contains cardiac glycosides; must be cooked (most guides boil in one or more changes of water) and never eaten raw (MDC: raw milkweed is poisonous). NC State lists all parts as poisonous (low severity, symptoms if eaten in quantity), and the USDA guide warns it may be toxic without sufficient preparation. Deadly lookalike: dogbane/Indian hemp (Apocynum cannabinum), which also has milky sap and opposite leaves; dogbane stems are smooth, thin, reddish and branch in the upper part, while common milkweed has a single thick, downy stem. Sources disagree on leaf hairiness, so don’t rely on it. Dogbane shoots are intensely bitter: if your cooked 'milkweed' is bitter, discard it. MOFGA warns never to eat mature pods. Dogbane pods are long, thin and paired, unlike milkweed’s plump warty pods.
Lookalikes
Dogbane (Indian hemp) Apocynum cannabinum deadly
Dogbane pods are long, slender and usually paired; young milkweed pods are 3-5 in long, plump and warty.
- Common Milkweed and its Doppelganger (C. Brown, Jun 9, 2022) Ohio State University Extension, Buckeye Yard & Garden onLine
- Apocynum cannabinum (Dogbane) NC State Extension Gardener Plant Toolbox
Safety flags
Cook first
Contains cardiac glycosides; must be cooked, usually boiled in changes of water.
- Asclepias syriaca (Common Milkweed) NC State Extension Gardener Plant Toolbox
- Apocynum cannabinum (Dogbane) NC State Extension Gardener Plant Toolbox
Eat in moderation
cardiac glycosides: Never eat raw; boil (usually in changes of water). NC State says it can cause stomach upset, nausea, vomiting, weakness and confusion if eaten in quantity; the calendar does not recommend it.
- Asclepias syriaca (Common Milkweed) NC State Extension Gardener Plant Toolbox
- Plant Guide: Common Milkweed, Asclepias syriaca USDA NRCS National Plant Data Center
Handling hazard (moderate)
irritant sap/pulp: Milky sap can cause contact dermatitis and eye irritation (NC State). Severity is set by the lookalike: dogbane’s sap can blister skin (NC State).
- Asclepias syriaca (Common Milkweed) NC State Extension Gardener Plant Toolbox
- Apocynum cannabinum (Dogbane) NC State Extension Gardener Plant Toolbox
Toxic parts
NC State lists all parts as poisonous.
- Asclepias syriaca (Common Milkweed) NC State Extension Gardener Plant Toolbox
- Apocynum cannabinum (Dogbane) NC State Extension Gardener Plant Toolbox
Safety marks and flags: what this means
Deadly lookalike / Toxic lookalike: a cited source names a lookalike of that danger. Deadly means a source says eating it may be fatal or calls it deadly, or NC State rates it high severity with life-threatening symptoms (sources sometimes disagree; for example Virginia creeper). Each plant’s Lookalikes list says how to tell them apart; “harmless (may be edible)” lookalikes are listed so you know a mix-up isn’t dangerous. Cook first: cooking is needed for safety (for daylilies it is a precaution, not a sourced requirement). Eat in moderation: a source says to limit quantity or frequency (for example oxalates in sorrels and dock, ginkgotoxin, safrole). Spray risk: a source says the plant is commonly treated with herbicide in parks or lawns (invasive control, lawn weeds) or, for ginkgo, sprayed to stop fruiting. Contamination: a source says the plant concentrates pollutants. Each plant’s Safety flags list gives the details and sources.
- ID risk
- Careful
- Why
- Dogbane pods are long, slender and usually paired; milkweed pods are 3-5 in. long, plump and warty (OSU). The plant itself is rated poisonous (NC State), MOFGA warns never to eat mature pods, and it is not recommended for eating here.
- Handling hazards
- Irritant sap/pulp (moderate)
- Soil risk
- low
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.
Handling hazards: what this means
Stings, thorns, irritating or phototoxic sap, staining hulls and spiny husks, with a severity: minor = brief discomfort; moderate = rash or blisters lasting days; serious = burns, scarring or medical care possible.
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)
What it looks like
Common milkweed’s pods are plump and covered in soft warty projections. While young, firm and not at all spongy, no more than about two-thirds full size, with soft white silk and seeds inside and no hint of browning, they can be cooked; mature pods are tough and inedible.
When to pick
- Starts
- early Jul
- Peak
- late Jul–late Jul
- Ends
- mid Aug
Pick small, firm pods with white silk and pale seeds; if the silk is brown or the seeds are dark, they are too old. Around DC pods start forming in late June and early July (iNaturalist), and young ones are plentiful in late July. The Missouri Department of Conservation’s Wild Edibles book lists milkweed collection through August.
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: peak, end
Start
sourced
Peak
estimated: Fruiting obs include older pods, so the peak for young, firm pods is placed at the start of the fruiting rise.
End
estimated: No source gives an end date for young pods; mid-August is a judgment based on flowering ending in July (iNaturalist).
Evidence
start: iNaturalist DC fruiting obs by week: 25:1, 26:2, 27:6, 28:4 (pods appear from late June, regularly from early July). | peak: iNaturalist DC fruiting obs: 30:11, 31:8, 32:8, 33:7 (about Jul 23 – Aug 19). | end: Missouri Wild Edibles: milkweed collection May–August; pods 'picked very young and small'. iNaturalist DC fruiting obs continue into October but are mostly maturing pods.
- api.inaturalist.org/v1/observations/histogram
- Wild Edibles of Missouri (Jan Phillips) Missouri Department of Conservation
Where to look
Sunny old fields and meadows (most records in Rock Creek Park, which bans picking, on Glenstone’s private museum grounds and along the C&O towpath); the C&O Canal and Virginia state parks may or may not count immature pods as allowed 'fruits' (ask the park first), so the sure option is young pods from private meadows with the owner’s permission.
- Habitats
- disturbed ground & waste places, old fields & meadows
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.
Ask first: rules unclear or not checked
- C&O Canal NHP (towpath, Georgetown to Great Falls MD and beyond)
Ambiguous: the C&O compendium allows edible fruits generally but sets no limit for milkweed pods, and does not say whether an immature pod counts as an edible fruit; ask the park first. Of these, 1 is at Carderock.
- Patuxent Research Refuge
Picking rules not checked. A federal facility, so ask before picking anything.
No picking here (3 places)
- Rock Creek Park
Look but don’t pick: Rock Creek Park’s compendium bans gathering any fruit, nut, berry, seed or greenery.
- Glenstone Museum grounds (private)
Private property: pick only with the owner’s permission.
- Four Mile Run stream valley (Arlington/Alexandria)
Look but don’t pick: Arlington County park rules (flora shall not be removed or disturbed) and Alexandria’s permit rule both apply.
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.
Where you may pick
Common milkweed is the essential host plant for monarch butterflies; take sparingly from large stands and leave plants with eggs or caterpillars. On National Park Service land around DC (Rock Creek Park and other NPS units) removing plants or plant parts is prohibited unless the park designates them; the C&O Canal’s compendium allows edible fruits generally but does not list milkweed pods, so whether immature pods may be picked there is ambiguous (ask the park), and no other NPS unit near DC names milkweed pods among the items it allows; Rock Creek’s compendium also bars gathering fruits, nuts, berries, seeds, mushrooms or cut greenery. Virginia state parks allow edible fruits, berries, fungi or nuts for personal use (4VAC5-30-50) but do not say whether immature milkweed pods count as edible fruits, so they are ambiguous there (ask the park). Get permission before picking in county or regional parks or on private land. Leave most pods to set seed.
- C&O Canal NHP (incl. Great Falls MD, trail-side only)
C&O 2026 compendium 2.1(c)(1): 'Edible fruits, nuts, berries, and mushrooms may be gathered by hand for personal use or consumption.' The limits table that follows does not list milkweed pods. A milkweed pod is botanically a fruit but is eaten as a cooked vegetable, and the compendium does not say whether immature pods count as 'edible fruits' (the same question as for Virginia state parks). Decided October 6, 2026: labeled ambiguous, as for other unlisted fruits there. Confirm with the park.
- Virginia State Parks
4VAC5-30-50 bars gathering any plant without a permit, except that edible fruits, berries, fungi or nuts may be collected for personal or individual use; 'edible fruits'. A milkweed pod is botanically a fruit, but it is eaten as a cooked vegetable and the rule bars taking plants; whether immature pods count as 'edible fruits' is not addressed
Where you may pick: what this means
For each park system: “yes” where its current rules (the park’s compendium or regulation) allow this plant or part, with the limit; “ambiguous” where the wording may or may not cover it, so ask the park; “no” where it is not allowed. Rock Creek Park, the GW Parkway sites (including Great Falls VA and Theodore Roosevelt Island), the National Mall, Montgomery and Prince George’s parks, Maryland state parks, and Fairfax and Arlington parks prohibit picking. Wolf Trap National Park for the Performing Arts allows blackberries and raspberries (one gallon per person per day) and chestnuts (one gallon per person per day). National Park Service rules are reissued every year; other parks change theirs from time to time, so check the park’s current rules. The Where you may pick page has every park’s rules.
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 3,205 = 3,007 research-grade iNaturalist sightings within 25 km + 98 needs-ID sightings counted at 65% (in the October 5 genus count, 3,009 of the 4,597 research-grade Asclepias sightings here were common milkweed) + 134 '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
- Real work
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
20 sources, each linked to the original.
- Rock Creek Park Superintendent’s Compendium National Park ServiceBacks up: picking rules
- 4VAC5-30-50. Flowers, plants, minerals, etc. Virginia Law Library (law.lis.virginia.gov)Backs up: picking rules
- C&O Canal NHP Superintendent’s Compendium, effective September 11, 2026 National Park Service, Chesapeake and Ohio Canal NHPBacks up: picking rules
- 36 CFR 2.1 - Preservation of natural, cultural and archeological resources Legal Information Institute, Cornell Law School (text of federal regulation)Backs up: picking rules
- Common Milkweed and its Doppelganger (C. Brown, Jun 9, 2022) Ohio State University Extension, Buckeye Yard & Garden onLineBacks up: description, safety
- Asclepias syriaca (Common Milkweed) NC State Extension Gardener Plant ToolboxBacks up: description, safety, keeping
- Milkweed Plant: A Truly Remarkable Wild Vegetable (Sam Thayer) Countryside MagazineBacks up: description, season
- iNaturalist research-grade observations of Asclepias syriaca within 25 km of downtown DC iNaturalistBacks up: findability
- USDA PLANTS Database: Asclepias syriaca (ASSY), native status USDA NRCSBacks up: native or invasive status
- Virginia Invasive Plant Species List (effective date: September 2024) Virginia Department of Conservation and Recreation, Division of Natural HeritageBacks up: native or invasive status
- 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
- 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
- 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
- Invasive Plants in the District DC Department of Energy & EnvironmentBacks up: native or invasive status
- Apocynum cannabinum (Dogbane) NC State Extension Gardener Plant ToolboxBacks up: safety details
- Plant Guide: Common Milkweed, Asclepias syriaca USDA NRCS National Plant Data CenterBacks up: safety, habitat
- iNaturalist research-grade observations of Asclepias syriaca within 25 km of Washington, DC, by month (fruiting) iNaturalistBacks up: season
- Milkweed, Common (Green Deane) Eat The WeedsBacks up: uses, safety
- Magnificent Milkweed (J. A. Pollard, 2010) Maine Organic Farmers and Gardeners AssociationBacks up: uses, safety, description, habitat
- Wild Edibles of Missouri (Jan Phillips, 2nd ed.) Missouri Department of ConservationBacks up: uses, safety, season