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When to plant Ranunculus in Dukes County, MA

Aim to plant Ranunculus in Dukes County on or after mid-spring; the window stays open through late spring. Dukes County's 177-day frost-free season gives you a single solid spring crop with a brief fall option. A second sowing from August 24 to September 7 extends the harvest into fall.

When to Plant Ranunculus in Dukes County, MA

Dukes County, Massachusetts Zone 7b July

July to-do list for Dukes County, Massachusetts

July rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Dukes County, Massachusetts.

Avg. last frost April 25
Avg. first frost October 19
Soil temp (4") 85°F
Watering Low
Pest pressure High
Daylight 14.7 hrs
Looking ahead to August
  • Fall sowing: ranunculus

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Persian ranunculus (Ranunculus asiaticus) produces multi-petaled blooms that rival roses in intricacy and lushness, in a warm palette of reds, oranges, yellows, pinks, and whites. A cornerstone of the specialty cut flower industry, ranunculus produces long, strong stems ideal for bouquets and arrangements. As a cool-season corm, it performs best in the mild shoulder seasons — planted in fall in warm-winter zones, or in early spring where summers arrive quickly. The 'Elegance', 'Amandine', and 'Tecolote' strains are favorites for both home gardens and commercial growers.

Dukes County, Massachusetts is in USDA Zone 7b. The average last spring frost is April 25 and the first fall frost is October 19, giving you a growing season of approximately 177 days.

At an elevation of 676 feet, Dukes County receives approximately 48.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Ranunculus during the growing season.

Bulb Blooms in Spring Pollinator-friendly Good for cutting
Dukes County, MA (Zone 7b) Moderate season
177 days
Last Spring Frost April 25
177 growing days
First Fall Frost October 19

Dukes County Soil Profile

Soil Type

Silt Loam

Soil pH

5.2-6.5

Drainage

Well Drained

Ranunculus Planting Risk Windows

Early Start (70% safe) ✓ Fits season (132 days to spare)
Transplant: Apr 14 🌸 Bloom: May 5 – Jun 2
Recommended (50%) ✓ Fits season (128 days to spare)
Transplant: Apr 25 🌸 Bloom: May 16 – Jun 13
Safe Start (90%) ✓ Fits season (130 days to spare)
Transplant: May 14 🌸 Bloom: Jun 4 – Jul 2

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Soil Compatibility in Dukes County

How your county's soil matches Ranunculus's growing requirements.

Soil pH

Your soil pH (5.2–6.5) is more acidic than Ranunculus prefers (6.0–6.5). Add garden lime to raise pH.

Soil Texture

The silt loam soil in Dukes County is excellent for Ranunculus — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Ranunculus.

Organic Matter

Organic matter is moderate (3.8%). Annual compost additions will help Ranunculus.

How to Plant Ranunculus

2"
Planting Depth
6"
Between Plants
8"
Between Rows

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Ranunculus Water Budget

Plant needs
1.0″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Ranunculus

Ranunculus needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Ranunculus Needs Rainfall You Supplement Action
Jan 3.7" 0" ❄️ Dormant
Feb 2.8" 0" ❄️ Dormant
Mar 3.4" 0" ❄️ Dormant
Apr 4.3" 4.5" 0" ✅ Rainfall sufficient
May 4.3" 4.5" 0" ✅ Rainfall sufficient
Jun 4.3" 4.2" 0.1" 💧 Light watering
Jul 4.3" 4.8" 0" ✅ Rainfall sufficient
Aug 4.3" 4.8" 0" ✅ Rainfall sufficient
Sep 4.3" 4.4" 0" ✅ Rainfall sufficient
Oct 4.3" 4.1" 0.2" 💧 Light watering
Nov 3.5" 0" ❄️ Dormant
Dec 3.5" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Dukes County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Ranunculus Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Ranunculus needs ~1,680 GDD — county provides 2,832 GDD Excellent fit

Ranunculus Planting Timeline — Dukes County, MA

Ranunculus Planting Calendar

Activity When Date Range
Bloom September 14 Sep 14 – Oct 12
Fall Sowing August 24 Aug 24 – Sep 7

Plant 2" deep · 6" apart · Rows 8" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April
May
June
July
August Fall Sowing
September Fall Sowing Bloom
October Bloom
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–6.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 7b

📆 Growing Season

177 days in Dukes County

Growing Tips for Ranunculus in Dukes County

Direct sow Ranunculus outdoors after April 25 in Dukes County when soil has warmed and frost danger has passed.

General growing tips

Pre-soak corms (which look like small octopus tentacles) in cool water for 2–4 hours before planting; do not over-soak. Plant with tentacles pointing downward, 1–2 inches deep and 6 inches apart. Ranunculus demand excellent drainage — they rot in soggy soil. In fall-planting zones (7+), plant October–November and allow to root through mild winter; blooms arrive in March–May. In zones 6, start corms indoors in late winter and transplant out after last frost for a late-spring bloom. Keep soil consistently moist but never waterlogged during growth. After foliage yellows (post-bloom), stop watering, let corms dry, lift them, and store in a cool dry place until replanting. In zones 8b–10b, corms can often be left in ground year-round.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Ranunculus in Dukes County, MA?

Dukes County is in Zone 7b with an average last frost of April 25. Plan your Ranunculus planting based on this frost date — see the calendar above for exact timing.

What planting zone is Dukes County, MA?

Dukes County, Massachusetts is in USDA Hardiness Zone 7b. The average last spring frost is April 25 and first fall frost is October 19.

When should I plant Ranunculus in Dukes County, MA?

In Dukes County, MA, plant Ranunculus after the last frost (around April 25) and before the first frost (around October 19). Best results when soil holds above 50°F.

What growing zone is Dukes County, MA for Ranunculus?

Dukes County sits in USDA Zone 7b. Ranunculus grows reliably in zones 6a through 10b, so it's a good fit here.

Can Ranunculus grow in Dukes County's climate?

Yes — Ranunculus grows well in Dukes County's temperate climate. Dukes County averages a 177-day frost-free season, with last frost around April 25 and first frost around October 19.

🌱

Your Dukes County Garden Planner — Free

A 22-page printable planner built for Dukes County (Zone 7b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Dukes County, MA. Local conditions may vary. Last updated: July 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.