Yes — Strong Match
royal catchfly (zones 5-8) covers every zone Massachusetts contains (5a-7b), so hardiness is not what limits it anywhere in the state.
Your yard isn't the whole zone.
Massachusetts spans zones 5a-7b, but your yard sits in exactly one — and slope, tree cover, and cold-air pockets nudge it further. Enter your address and we'll score royal catchfly against your parcel's actual hardiness, soil, and sun.
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Zone Comparison
Royal Catchfly Needs
- USDA Zones: 5-8
- Sun: Full Sun
- Mature size: 3.5 ft tall
- Picking window: ~21 days of harvest
- Drought tolerance: High
Massachusetts Has
- USDA Zones: 5a-7b
- Last Hard Freeze (28°F): Apr 4 - Apr 14
- First Hard Freeze (28°F): Oct 24 - Nov 14
- Annual Rainfall: 42-50 inches
- Common Soils: Glacial till, Sandy loam, Rocky loam
Plant Zone Range (zones 5-8)
Preferred Soil pH
Plant data: USDA PLANTS Database / Growable Ground plant catalog. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.
When to Plant Royal Catchfly in Massachusetts
The frost window
Across Massachusetts, the last spring hard freeze (28°F) clears between Apr 4 and Apr 14, and the first fall hard freeze lands between Oct 24 and Nov 14 (NOAA Regional Climate Centers ACIS, 1991-2020). Counting from the latest last freeze to the earliest first freeze, that's a 193-day window you can count on — up to 224 days on a mild site in a kind year. That marks the hard freeze, not the last light frost, so tender transplants usually wait another 2-3 weeks.
Winter standing
Massachusetts runs as cold as USDA zone 5, and no sourced winter-hardiness floor is on record for royal catchfly, so this page does not state whether it overwinters here — and gives no fall establishment date on the strength of a guess. Whether royal catchfly is a permanent planting or a replant-every-spring crop for you turns on your own zone within Massachusetts; check its hardiness range against that before treating it as long-lived ground.
Frost window: NOAA Climate Normals 1991-2020. Plant timing fields: USDA PLANTS Database. Your site's own frost dates can run earlier or later than the state range — a parcel report pins them down.
Soil + Drainage Fit
Royal Catchfly likes near-neutral soil (pH 6.5-7.5). That's the common-ground band across Massachusetts's glacial till and sandy loam — a soil test confirms it for your site. Drainage matters: this plant wants well (dry spells). If your Massachusetts site is heavier clay or sits in a low spot, raised beds or amendment with compost solve it.
Plant pH and drainage requirements from USDA PLANTS Database. Massachusetts soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
Royal Catchfly in Massachusetts — Quick Answer
- Verdict: Yes — Strong Match
- Plant Zones: 5-8 (USDA PLANTS Database)
- State Zones: 5a-7b (USDA ARS PHZM 2023)
- Growing Season: 28°F hard freezes about Apr 4 - Apr 14 to Oct 24 - Nov 14 (NOAA Regional Climate Centers ACIS, 1991-2020)
What Else to Consider for Royal Catchfly in Massachusetts
Zone compatibility tells you about winter cold survival — but Massachusetts growers also need to think about:
Short growing season (120-180 frost-free days) limits warm-season crops
Rocky glacial soils require amendment in many areas
Late spring frosts can damage early plantings through mid-May
Deer pressure is significant in suburban and rural areas
What to actually do about these — and the constraints that apply to every Massachusetts grower, not just royal catchfly — is covered on the Massachusetts growing guide.
Where in Massachusetts Royal Catchfly Is Zone-Hardy
Royal Catchfly is rated for USDA zones 5–8. Every one of Massachusetts’s 14 counties sits inside that band — from Berkshire County at zone 5b to Nantucket County at zone 7b — so winter cold is not what decides this plant anywhere in the state. What is left to vary is your own parcel: slope, shelter and cold-air drainage routinely move a site half a zone either way from the county figure.
Across those 14 counties Massachusetts’s winter-low ladder runs from zone 5b in Berkshire County to zone 7b in Nantucket County — 2 USDA zones of spread, which is 20°F between the two counties’ average coldest night of the year. That is why a statewide hardiness answer is where you start and not where you finish.
The planting window moves with it. Berkshire County holds its last hard freeze (28°F) until about Apr 29, while Nantucket County is clear by Mar 26 — 34 days apart. Set royal catchfly out on your county’s date, not the state’s.
County hardiness zones: USDA Plant Hardiness Zone Map (PHZM) 2023, per county. County last-freeze dates: NOAA Regional Climate Centers ACIS (1991-2020), county 28°F killing freeze — earlier than the folk 32°F "last frost". Royal Catchfly’s zone 5–8 band: USDA PLANTS / Growable Ground plant database. A parcel report resolves your address’s own zone and frost dates rather than its county’s.
Where in Massachusetts Fits Best
Even within Massachusetts's zones 5a-7b, county microclimates differ enough to change what thrives. These counties carry the closest zone match for royal catchfly (USDA PHZM 2023):
Pollinator + Wildlife Value
Royal Catchfly draws butterflies, hummingbirds, and moths (high value, Growable Ground Plant Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, royal catchfly can only work that bloom inside Massachusetts's frost window — roughly 206 days, opening after the last 28°F freeze (Apr 4 - Apr 14) and closing at the first (Oct 24 - Nov 14), per NOAA Regional Climate Centers ACIS, 1991-2020.
Massachusetts Cooperative Extension
For Massachusetts-specific cultivar recommendations, planting calendars, and pest pressure for royal catchfly, the canonical source is UMass Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Royal Catchfly native to Massachusetts?
Royal Catchfly is native to parts of the Lower 48, but the USDA PLANTS Database (accessed 2026-07-01) does not document a native range in Massachusetts. It can still earn a place in a Massachusetts garden — the zone comparison above tells you whether it will thrive.
Looking for plants that belong here? The Massachusetts growing guide lists USDA-documented natives for the state.
Native-range data: USDA PLANTS Database state-distribution records, accessed 2026-07-01.
Common Questions About Growing Royal Catchfly in Massachusetts
When can I plant Royal Catchfly in Massachusetts?
Massachusetts's last spring hard freeze (28°F) clears between Apr 4 and Apr 14, and the first fall hard freeze lands between Oct 24 and Nov 14 (NOAA Regional Climate Centers ACIS, 1991-2020). No sourced winter-hardiness floor is on record for Royal Catchfly, so this page does not state whether it overwinters in Massachusetts and publishes no fall establishment date for it — check its hardiness range against your own zone before treating it as a permanent planting.
What hardiness zone is Royal Catchfly grown in across Massachusetts?
Massachusetts spans USDA hardiness zones 5a-7b (USDA ARS PHZM 2023). Royal Catchfly carries a range of zones 5-8, so the overlap zones are where outdoor growing is most reliable.
How many frost-free days does a typical Massachusetts site have?
A typical Massachusetts site sees ~206 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). Royal Catchfly should be matched against that window, so check whether your local microclimate runs above or below the state average before settling on a planting date.
Is Royal Catchfly native to Massachusetts?
Royal Catchfly is native to parts of the Lower 48, but the USDA PLANTS Database (accessed 2026-07-01) does not document a native range in Massachusetts. It can still earn a place in a Massachusetts garden — the zone comparison above tells you whether it will thrive.
How should I amend the soil for Royal Catchfly in Massachusetts?
Royal Catchfly prefers pH 6.5-7.5 and well (dry spells) drainage (Growable Ground Plant Database). That sits in the common-ground band across Massachusetts soils — a 30-minute soil test from a local Extension lab confirms it for your specific site.
Will Royal Catchfly actually grow on my specific land in Massachusetts?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores royal catchfly against your address's exact soil pH, drainage, sun, and frost-date data drawn from USDA SSURGO, NOAA, and PRISM — not state averages.
Check your specific parcel in Massachusetts
State-level data is a sketch. Your Growable Ground report scores royal catchfly against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that Massachusetts royal catchfly averages can't show:
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