FireApproved

United States / Grow / sand dropseed

sand dropseed (Sporobolus cryptandrus)
Photo: (c) KAnatoliy, some rights reserved (CC BY) (CC BY), via iNaturalist. Species-typical, not necessarily this cultivar.

sand dropseed

Sporobolus cryptandrus · Poaceae · all Sporobolus records · Wikipedia

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Is this one for your yard?

Enter your ZIP to see whether this is legal to plant in your state, and whether it survives your winter.

Sand dropseed has qualified support as fire resistant, but Idaho’s 4-of-10 score keeps the answer from being a clear yes.

Two of three sources recommend it, though under different terms. FireSmart BC attaches a needs-more-research flag to its fire-resistant approval of sand dropseed. Arizona sites above 3,000 feet are the setting for sand dropseed’s FIREWISE recommendation from the University of Arizona Cooperative Extension. Those are regional plant lists, so their recommendations apply within the settings each program addresses.

Idaho Firewise provides the caution. Its field-trial database assigns sand dropseed 4 of 10 for fire resistance. CSU’s published thresholds for this scale place 4–7 in the mixed band and 8–10 in the recommended band. That does not erase the two favorable listings, but it does explain why sand dropseed does not earn an unqualified fire-resistant verdict.

Sand dropseed is a low-water grass that reaches about three feet at maturity. Hardy to USDA zone 3a, sand dropseed is native in the southeastern, southwestern, northwestern, and northeastern United States. The practical reading is conditional: regional programs in British Columbia and higher-elevation Arizona accept it, but the Idaho score supports treating its fire resistance as unsettled rather than assured.

Form
grass
Mature height
~3 ft
Water need
low
Rated in
Arizona above 3,000 feet / interior Southwest; British Columbia; southern Idaho / Intermountain
On this lot

1. Fire evidence and conditions

Fire evidence
Mixed evidence — location does not change the cited classification.
Placement evidence
1 source placement record; source schemes remain separate.
Evidence regions
Arizona above 3,000 feet / interior Southwest; British Columbia; southern Idaho / Intermountain
Typed publication scope: 2 scopes across 2 cited fire sources
  • Fire Resistance of Plants Master Database · Official scoped edition
    • Southern Idaho (ID footprint); partial normalized coverage · 2013-11-08

      The official database labels itself "For Southern Idaho" and describes Idaho residents at the urban-rangeland interface. FireApproved publishes 419 existing plant owners that cite its scored rows. This bounded Southern Idaho scope is regional context, not statewide coverage or a conclusion that the score transfers unchanged to every Idaho site.

  • FIREWISE Plant Materials for 3,000 ft. and Higher Elevations (AZ1289) · Official scoped edition
    • Arizona at or above 3,000 feet (AZ footprint); partial normalized coverage · 2011-12-01

      AZ1289 is explicitly limited to Arizona elevations of 3,000 feet and higher. FireApproved publishes 69 exact owners as regional Arizona context, retaining every water and elevation condition. It is never promoted to statewide low-desert guidance or an independent Tier 1 vote.

2. Why this plant is relevant here

State distribution
Documented in AR, AZ, CA, CO, CT, GA, IA, ID, IL, IN, KS, KY, LA, MA, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY.
Native range
Current cited native range in AR, AZ, CA, CO, CT, GA, IA, ID, IL, IN, KS, KY, LA, MA, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY.
USDA hardiness
Documented minimum 3a; no upper limit is documented.

3. Legal, ecological, and broader status

How to read this page

The status above is computed from the cited rows below: independent recommendations can support a fire-resistant result, an avoid row can produce keep-away, and disagreement stays visible as conflict. Placement notes preserve each source’s own scheme rather than translating unlike rules into one scale. This is evidence about a plant, not permission to plant it in every part of the defensible space; Zone 0 remains noncombustible.

Native and introduced range evidence

These are exact U.S. botanical-area records from the cited range source. Native and introduced describe biogeographic relationship, not fire performance or planting approval. Doubtful and extinct rows stay visible but do not count as current presence.

Current native

44

exact source areas

Current introduced

0

exact source areas

Qualified

0

doubtful or extinct source rows

44 native source areas · World Checklist of Vascular Plants, version 16 v16, as of 2026-06-04
  • Arkansas (AR)
  • Arizona (AZ)
  • California (CA)
  • Colorado (CO)
  • Connecticut (CT)
  • Georgia (GA)
  • Iowa (IA)
  • Idaho (ID)
  • Illinois (IL)
  • Indiana (IN)
  • Kansas (KS)
  • Kentucky (KY)
  • Louisiana (LA)
  • Massachusetts (MA)
  • Maine (ME)
  • Michigan (MI)
  • Minnesota (MN)
  • Missouri (MO)
  • Mississippi (MS)
  • Montana (MT)
  • North Carolina (NC)
  • North Dakota (ND)
  • Nebraska (NE)
  • New Hampshire (NH)
  • New Jersey (NJ)
  • New Mexico (NM)
  • Nevada (NV)
  • New York (NY)
  • Ohio (OH)
  • Oklahoma (OK)
  • Oregon (OR)
  • Pennsylvania (PA)
  • Rhode I. (RI)
  • South Carolina (SC)
  • South Dakota (SD)
  • Tennessee (TN)
  • Texas (TX)
  • Utah (UT)
  • Virginia (VA)
  • Vermont (VT)
  • Washington (WA)
  • Wisconsin (WI)
  • West Virginia (WV)
  • Wyoming (WY)

The lossless worldwide derivative is retained once in the research corpus; object pages repeat only exact U.S. areas needed by the local lens. The JSON twin carries the same page assertions.

Plant hardiness evidence

These values describe the plant source. Your ZIP zone comes from the separate 2023 USDA Plant Hardiness Zone Map. Whole-zone values stay whole-zone, and a single unresolved value is not treated as a tolerance range. Different source boundaries stay separate: overlapping statements are compared independently, while only ranges with no shared zone are called a conflict.

Where its sources say to plant it

Placement rules below use each source's own distances or named zones, tied to its rating. They are not interchangeable with the directory's current Zone 0 guidance.

The evidence

Grouped by what each source concluded. Primary evidence rated the plant itself (a lab, field program, or original curation); corroboration compiled or republished another source's rating and resolves to its root lineage.

Recommends (2)

Corroboration (2 rows from 2 sources)

Mid-scale / conditional (1)

Fire-resistant grasss instead

fox sedge
Carex vulpinoidea tall fescue
Festuca arundinacea tall fescue
Lolium arundinaceum prairie cordgrass
Spartina pectinata green bulrush
Scirpus atrovirens woolgrass
Scirpus cyperinus
Same genus in the directory · the Sporobolus group page

Last verified 2026-08-23. JSON (CC BY 4.0)

Profiles: USDA PLANTS · GBIF · iNaturalist · Wikidata · Wikipedia · ITIS

Sporobolus cryptandrus (Sand Dropseed). FireApproved. https://fireapproved.com/plants/sporobolus-cryptandrus/. Last verified 2026-08-23.