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Fredericton, NB — Planting Guide

Fredericton is in Zone 5b. The average last spring frost is April 24 and the first fall frost is October 8, giving you a growing season of approximately 167 days.

At an elevation of 21 m, Fredericton receives approximately 795 mm of rainfall annually. Summer highs average 26°C with winter lows around -12°C. The predominant soil type is Gray-Brown Podzol.

🌡️ Zone

5b (-15°F to -10°F min)

❄️ Last Frost

April 24

🍂 First Frost

October 8

📅 Growing Season

167 days

⛰️ Elevation

21 m

🌧️ Annual Rainfall

795 mm

Fredericton, NB Moderate season
167 days
Last Spring Frost April 24
167 growing days
First Fall Frost October 8

Monthly Watering Calendar

When you'll need to water your garden — based on average monthly rainfall vs. the ~25 mm/week most gardens need.

25mm/wk 0mm 33mm 64mm 97mm 127mm Jan 36mm Feb 33mm Mar 51mm +38mm Apr 71mm May 102mm +18mm Jun 91mm +18mm Jul 91mm +18mm Aug 91mm +38mm Sep 71mm +51mm Oct 58mm Nov 53mm Dec 48mm
Rainfall sufficient Supplemental water needed Heavy watering required - - - 1"/week garden need
View detailed monthly data
MonthAvg RainfallRainy DaysExtra Water NeededWatering Effort
Jan 36 mm 8 days None
Feb 33 mm 7 days None
Mar 51 mm 9 days None
Apr 71 mm 10 days 38 mm Moderate
May 102 mm 9 days 8 mm Low
Jun 91 mm 10 days 18 mm Moderate
Jul 91 mm 8 days 18 mm Moderate
Aug 91 mm 8 days 18 mm Moderate
Sep 71 mm 7 days 38 mm Moderate
Oct 58 mm 7 days 51 mm High
Nov 53 mm 8 days None
Dec 48 mm 7 days None

Annual total: 798 mm. Water needs vary by crop — tomatoes need ~1.2"/week while herbs like rosemary need only 0.3"/week. Check individual plant pages for crop-specific water budgets that factor in your county's rainfall and soil drainage.

Fredericton Soil Profile

Soil Type

Gray-Brown Podzol

Soil pH

6.0-7.0

Drainage

Well Drained

Gardening Difficulty Score

95 Excellent
Frost Timing Risk
0.0/10
Drought Risk
0.0/10
Soil Difficulty
3.0/10
Altitude Challenge
0.0/10
Climate Shift
0.0/10
Rainfall Challenge
0.0/10

Fredericton is a very forgiving place to garden. Most plants thrive here with minimal effort.

Zone 5b Frost Countdown
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Last Frost: Apr 24 First Frost: Oct 8

Local Gardening Help in Fredericton

Free expert help is closer than you think. Your county's cooperative extension office connects you with trained gardeners, soil testing labs, and local programs — all specific to Fredericton's climate and soil.

County Extension Office

Fredericton Extension Office

Extension offices are run by land-grant universities and funded by the USDA. Their advice is free, research-based, and tailored to your county's specific conditions.

Master Gardener Program

Free gardening help from trained volunteers

Master Gardeners are community volunteers who complete 40–60 hours of university horticultural training. They answer gardening questions, diagnose plant problems, and offer workshops — all free.

Many extension offices run a Master Gardener hotline where you can call or email with photos of plant problems for free diagnosis.

Soil Testing

Available through your extension office

Before amending your soil, get it tested. Your extension office offers soil testing (typically $10–$25) that tells you exact pH, nutrient levels, and amendment recommendations specific to what you want to grow.

Services Available in Fredericton

Soil testing Pest identification
Finding local nurseries & garden centers in Fredericton

Why Buy Local

Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Fredericton's soil and climate that big-box stores can't. Plants from local growers are typically hardier because they're already acclimated to your zone.

How to Find Them

Search for "nurseries near Fredericton NB" or "garden center Fredericton" on Google Maps. Also check with your extension office — they often maintain lists of reputable local nurseries and plant sales.

Community gardens & gardening groups

Community gardens are a great way to learn from experienced gardeners in your area, especially if you're limited on space. Search "community garden Fredericton NB" or check your extension office and local parks department. Facebook groups like "Fredericton Gardeners" or "New Brunswick Gardening" are also excellent for local advice and plant swaps.

What to Plant After Your Harvest

After your first crops finish, use the remaining frost-free days to grow a second round.

Show 6 more succession options
After Zucchini (harvest ends Aug 12) 64 days until frost
After Peppers (harvest ends Sep 9) 36 days until frost
After Tomatoes (harvest ends Sep 9) 36 days until frost
After Basil (harvest ends Aug 26) 50 days until frost
After Carrots (harvest ends Jul 22) 85 days until frost
After Okra (harvest ends Aug 19) 57 days until frost

Sunlight & Day Length

Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.

Longest Day

15.5 hours

Summer solstice daylight

Shortest Day

8.5 hours

Winter solstice daylight

Peak Sun Hours

9.7 hr/day peak (summer)

Peak sun hours (green dashed line below) account for cloud cover — this is the usable direct sunlight your garden actually receives. Most vegetables need 6+ peak sun hours.

14hr 12hr 2h 6h 10h 13h 17h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daylight hours (sunrise to sunset) Peak sun hours (direct sunlight after cloud cover) ▪ Gold zone = long day (14+ hr) ▪ Blue zone = short day (<12 hr)

Onion tip: Your long summer days (14+ hours) support long-day onion varieties like Walla Walla, Sweet Spanish, and Ailsa Craig.

View detailed monthly data
MonthDaylight HoursPeak Sun HoursDay Length
January 8.8 hr 3.7 hr Short day
February 10.1 hr 4.6 hr Short day
March 11.6 hr 5.4 hr Short day
April 13.3 hr 6.9 hr Neutral
May 14.7 hr 8.3 hr Long day
June 15.5 hr 9.6 hr Long day
July 15.2 hr 9.7 hr Long day
August 14 hr 8.9 hr Long day
September 12.3 hr 7.4 hr Neutral
October 10.7 hr 5.4 hr Short day
November 9.2 hr 3.6 hr Short day
December 8.5 hr 3.3 hr Short day

Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.

Soil Temperature & Composting Calendar

Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.

Plant Warm Crops When

Soil reaches 16°C+

Soil warm enough from Jun through Sep.

Best Month to Compost

Jun

Microbial activity peaks when soil is warm.

Active Composting

6 months

Solid season. Piles go dormant in winter.

16°C 21°C -12° -1° 10° 21° 32° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
10 cm depth 20 cm depth - - - 16°C (corn, beans) - - - 21°C (tomatoes, peppers)
View detailed monthly data
MonthSoil 10cm DeepSoil 20cm DeepCompost ActivityTime to Finish
Jan -4°C 0°C ❄️ Dormant ~36 weeks
Feb -6°C -2°C ❄️ Dormant ~36 weeks
Mar -1°C 1°C ❄️ Dormant ~36 weeks
Apr 7°C 7°C 🐢 Slow ~24 weeks
May 15°C 12°C ♻️ Active ~14 weeks
Jun 20°C 18°C 🔥 Peak ~8 weeks
Jul 25°C 21°C 🔥 Peak ~8 weeks
Aug 26°C 22°C 🔥 Peak ~8 weeks
Sep 22°C 21°C 🔥 Peak ~8 weeks
Oct 13°C 15°C ♻️ Active ~14 weeks
Nov 6°C 9°C 🐢 Slow ~24 weeks
Dec -1°C 2°C ❄️ Dormant ~36 weeks

Highlighted rows = soil 16°C+ (safe for warm-season transplants). Compost finishes fastest during peak activity months.

Pest & Disease Pressure in Fredericton

Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.

Insect Pest Pressure

5.8 / 10

Moderate — common pests appear but manageable with monitoring.

Disease Risk

2.3 / 10

Low disease risk — dry conditions reduce fungal problems.

Seasonal Risk

Spring Low
Summer High
Fall Low
Winter Low
View 6 common pests in your area
PestRisk LevelPeak Months
Aphids Moderate May, Jun, Jul, Aug
Japanese beetles Moderate Jun, Jul, Aug
Squash bugs Low Jun, Jul, Aug
Tomato hornworms Moderate Jul, Aug
Cabbage loopers Low May, Jun, Jul, Aug
Slugs Low Apr, May, Jun
Organic pest management tips
  • Use row covers on susceptible crops during peak pest months
  • Apply neem oil preventatively every 7-14 days during active pest season
  • Interplant with strong-scented herbs (basil, marigold) to confuse pests
  • Hand-pick larger pests (beetles, caterpillars) in early morning when they're sluggish
  • Practice crop rotation — never plant the same family in the same spot within 3 years

Cover Crops for Fredericton

Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with county-specific planting dates.

Spring Cover Crops (3 options) — Build soil before the main growing season
Crop Plant By Terminate N-Fixing Soil Benefit
Buckwheat Apr 30 Aug 6 Rapid growth, attracts pollinators, suppresses weeds
Sorghum-sudan grass May 2 Aug 6 Massive biomass, breaks compaction, suppresses nematodes
White clover Mar 28 Jul 30 ✓ Yes Living mulch, fixes nitrogen, permanent ground cover
Summer Cover Crops (1 options) — Fill gaps and suppress weeds between plantings
Crop Plant By Terminate N-Fixing Soil Benefit
Sunflowers May 14 Sep 17 Deep roots break compaction, attract pollinators and beneficial insects
Fall Cover Crops (6 options) — Plant after harvest to protect soil over winter
Crop Plant By Terminate N-Fixing Soil Benefit
Austrian winter peas Jul 29 Apr 10 ✓ Yes Fixes nitrogen, good for heavy clay soils
Daikon radish Aug 29 Apr 3 Deep taproot breaks compaction, excellent for clay soils
Hairy vetch Jul 14 Apr 3 ✓ Yes Excellent nitrogen fixer, good for depleted soils
Oats Sep 1 Apr 3 Quick biomass, winterkills in cold zones — no spring tillage needed
Winter rye Jul 8 Apr 3 Suppresses weeds, prevents erosion, breaks up compacted soil
Winter wheat Jun 30 Apr 10 Erosion control, weed suppression, good biomass

Wind & Microclimate

Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.

Seasonal Wind Speed

Spring: 22 km/h   Summer: 16 km/h

Fall: 15 km/h   Winter: 19 km/h

Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.

Windbreak Benefit

6.8/10

Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.

Frost Pocket Risk

Low

Relatively flat terrain (58 m range). Frost pocket risk is minimal — garden placement is flexible.

Rainwater Harvesting Potential

How much water you can collect, when to collect it, and what size system you need for your garden.

Annual Collection

59,231 L

Per 93 m² of roof area (at 80% collection efficiency)

Recommended Setup

6 rain barrels (208 L each)

For a typical 46 m² garden. Serious collectors: consider a 6,624 L tank.

Legal Status

Unrestricted

Rainwater harvesting is fully legal in your state with no restrictions.

Best Collection Months

May, Jun, Jul, Aug

Highest rainfall months — your barrels will fill up quickly during these months.

Months to Draw From Storage

Jan, Feb, Dec

Dry months when you'll rely on stored water — size your storage for this gap.

Rainwater collection tips for your area
  • Your county receives approximately 31.4 inches of rain per year
  • A 1,000 sq ft roof can collect roughly 15,649 gallons annually
  • Rainwater harvesting is fully legal in your state
  • Stock up on stored water before your dry season (Jan, Feb, Dec)
  • Use a first-flush diverter to keep roof debris out of your collection

Soil & Growing Conditions in Fredericton

Soil Type

Gray-Brown Podzol

Amend with compost each season to maintain fertility and structure.

Watering Needs

Moderate rainfall (31.3 in.) — plan to water 1–2 times per week during the growing season.

Season Tips

167-day frost-free season

Start warm-season crops indoors and focus on short-season varieties. Cold frames extend your season by 3–4 weeks in fall.

Free Garden Planner

Plan your entire garden season — organize planting dates, track what you're growing, and know exactly when to start seeds, transplant, and harvest.

Get My Free Planner →

Recommended for Your Garden

🧪
Soil Test Kit $12-25

Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.

📏
Digital pH Meter $10-20

Get instant, accurate soil pH readings to fine-tune your amendments.

🍂
Organic Compost $8-30

Boost soil fertility and structure with rich, well-aged organic compost.

🥬 Vegetables to Grow in Fredericton

106 vegetables that grow well in Zone 5b with planting dates for Fredericton.

Show all 106 vegetables with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Acorn Squash Mar 20 May 1 May 8 Jul 31 – Sep 4 80–100
Amaranth Feb 27 May 1 May 8 Aug 7 – Sep 25 90–120
Arugula Mar 20 Apr 10 Apr 24 May 29 – Jul 31 30–50
Asparagus May 8 730–1095
Beets Apr 10 Jun 5 – Jul 3 50–70
Belgian Endive Mar 20 Apr 10 Apr 24 Aug 14 – Oct 9 110–150
Bitter Melon Feb 27 May 1 May 8 Jul 10 – Aug 21 60–90
Black Beans May 1 Jul 31 – Sep 18 90–120
Bok Choy Mar 20 Apr 10 Apr 24 Jun 5 – Jul 10 40–60
Broccoli Mar 20 Apr 10 Apr 24 Jun 26 – Aug 7 60–90
Broccoli Rabe Mar 20 Apr 10 Apr 24 Jun 5 – Jul 10 40–60
Brussels Sprouts Mar 20 Apr 10 Apr 24 Jul 24 – Sep 18 90–130
Butternut Squash Mar 20 May 1 May 8 Aug 7 – Sep 11 85–110
Cabbage Mar 20 Apr 10 Apr 24 Jun 26 – Aug 21 60–100
Calabash Feb 27 May 1 May 8 Jul 31 – Sep 25 80–120
Carrots Apr 10 Jun 12 – Jul 17 60–80
Cauliflower Mar 20 Apr 10 Apr 24 Jun 19 – Aug 21 55–100
Celeriac Mar 20 Apr 10 Apr 24 Aug 7 – Sep 11 100–120
Celery Mar 20 Apr 10 Apr 24 Jul 17 – Sep 11 80–120
Celtuce Mar 20 Apr 10 Apr 24 Jun 26 – Aug 7 60–90
Chard Mar 20 Apr 10 Apr 24 Jun 19 – Aug 7 50–60
Chickpeas Mar 20 Apr 10 Apr 24 Jul 17 – Aug 28 80–110
Chicory Mar 20 Apr 10 Apr 24 Jun 26 – Aug 7 60–85
Chinese Cabbage Mar 20 Apr 10 Apr 24 Jun 19 – Jul 17 50–70
Christmas Lima Beans Feb 27 May 1 May 8 Jul 31 – Sep 4 80–100
Collard Greens Mar 20 Apr 10 Apr 24 Jun 19 – Aug 21 55–75
Corn May 1 Jul 3 – Aug 28 60–100
Cowpeas May 1 Jul 3 – Aug 14 60–90
Cress Mar 20 Apr 10 Apr 24 May 8 – May 29 14–21
Crookneck Squash Mar 20 May 1 May 8 Jun 26 – Jul 24 45–60
Crosne Apr 10 Sep 11 – Sep 25 150–200
Cucumber Mar 20 May 1 May 8 Jul 3 – Aug 28 50–70
Daikon Apr 10 Jun 5 – Jul 3 50–70
Delicata Squash Mar 20 May 1 May 8 Jul 31 – Sep 4 80–100
Edamame May 1 Jul 17 – Aug 28 75–100
Eggplant Feb 13 May 1 May 8 Jul 17 – Sep 18 65–85
Endive Mar 20 Apr 10 Apr 24 Jun 12 – Jul 17 45–65
Escarole Mar 20 Apr 10 Apr 24 Jun 19 – Jul 17 50–70
Fava Beans Mar 20 Apr 10 Apr 24 Jul 10 – Aug 21 75–100
Fennel Feb 27 May 1 May 8 Jul 10 – Aug 21 60–90
Garlic 90–240
Green Beans May 1 Jun 26 – Aug 21 50–65
Horseradish May 8 Sep 11 – Oct 23 120–180
Hot Peppers Feb 13 May 1 May 8 Jul 17 – Oct 23 70–120
Hubbard Squash Mar 20 May 1 May 8 Aug 21 – Sep 25 100–120
Kabocha Mar 20 May 1 May 8 Aug 7 – Sep 4 85–100
Kai Lan Mar 20 Apr 10 Apr 24 Jun 12 – Jul 10 45–60
Kale Mar 20 Apr 10 Apr 24 Jun 19 – Aug 14 50–70
Kidney Beans May 1 Jul 31 – Sep 4 85–110
Kohlrabi Mar 20 Apr 10 Apr 24 Jun 12 – Jul 17 45–65
Komatsuna Mar 20 Apr 10 Apr 24 May 29 – Jul 3 35–50
Leeks Mar 20 Apr 10 Apr 24 Jul 24 – Oct 9 90–150
Lentils Mar 20 Apr 10 Apr 24 Jul 17 – Aug 28 80–110
Lettuce Mar 20 Apr 10 Apr 24 May 29 – Aug 7 30–60
Lima Beans May 1 Jul 3 – Aug 14 60–90
Mache Mar 20 Apr 10 Apr 24 Jun 5 – Jul 10 40–60
Melon Mar 20 May 1 May 8 Jul 17 – Sep 4 70–100
Microgreens Mar 20 Apr 10 Apr 24 May 1 – May 29 7–21
Mitsuba Mar 20 Apr 10 Apr 17 Jun 12 – Aug 7 50–70
Mizuna Mar 20 Apr 10 Apr 24 May 29 – Jun 26 30–45
Mustard Greens Mar 20 Apr 10 Apr 24 May 29 – Jul 31 30–50
Napa Cabbage Mar 20 Apr 10 Apr 24 Jun 19 – Jul 24 55–75
New Zealand Spinach Feb 27 May 1 May 8 Jul 3 – Jul 31 55–70
Okra Feb 27 May 1 May 8 Jul 3 – Aug 28 50–65
Onion Mar 20 Apr 10 Apr 24 Jul 24 – Sep 11 90–120
Pac Choi Mar 20 Apr 10 Apr 24 Jun 5 – Jul 3 40–55
Parsnip Apr 10 Jul 24 – Sep 4 100–130
Patty Pan Squash Mar 20 May 1 May 8 Jun 26 – Jul 24 45–60
Peas Mar 20 Apr 10 Apr 24 Jun 19 – Aug 14 55–70
Peppers Feb 13 May 1 May 8 Jul 10 – Sep 18 60–90
Pole Beans Feb 27 May 1 May 8 Jul 3 – Aug 28 55–70
Potatoes Feb 27 May 1 May 8 Jul 17 – Sep 25 70–120
Pumpkin Mar 20 May 1 May 8 Aug 7 – Sep 25 85–120
Purslane Mar 20 Apr 10 Apr 24 Jun 5 – Jul 10 40–60
Radicchio Mar 20 Apr 10 Apr 24 Jun 26 – Jul 31 60–80
Radish Apr 10 May 8 – May 29 22–35
Rhubarb May 15 365–730
Romanesco Mar 20 Apr 10 Apr 24 Jul 10 – Aug 21 75–100
Rutabaga Apr 10 Jul 3 – Aug 7 80–100
Salsify Apr 10 Jul 24 – Sep 4 100–130
Savoy Cabbage Mar 20 Apr 10 Apr 24 Jul 3 – Aug 28 70–110
Scallions Mar 20 Apr 10 Apr 24 Jun 19 – Jul 17 50–70
Scarlet Runner Beans Feb 27 May 1 May 8 Jul 10 – Aug 14 60–80
Shallot Mar 20 Apr 10 Apr 24 Jul 24 – Sep 11 90–120
Shiso Mar 6 May 1 May 8 Jul 3 – Aug 28 50–70
Snap Peas Feb 27 May 1 May 8 Jul 3 – Aug 28 55–70
Snow Peas Mar 20 Apr 10 Apr 24 Jun 19 – Aug 14 50–65
Soybeans May 1 Jul 24 – Sep 18 80–120
Spaghetti Squash Mar 20 May 1 May 8 Aug 7 – Sep 4 85–100
Spinach Mar 20 Apr 10 Apr 24 May 29 – Jul 31 35–50
Squash (Summer) Mar 20 May 1 May 8 Jun 26 – Aug 28 45–65
Squash (Winter) Mar 20 May 1 May 8 Jul 31 – Sep 25 80–120
Sunchoke May 8 Aug 28 – Oct 23 110–150
Sunflower Feb 27 May 1 May 8 Jul 17 – Sep 4 70–100
Sweet Corn May 1 Jul 3 – Aug 14 60–90
Sweet Potatoes Feb 27 May 1 May 8 Aug 7 – Sep 25 90–120
Tatsoi Mar 20 Apr 10 Apr 24 May 29 – Jul 3 35–50
Tomatillo Feb 27 May 1 May 8 Jul 10 – Sep 18 60–85
Tomatoes Feb 27 May 1 May 8 Jul 10 – Sep 18 60–85
Turnip Apr 10 May 22 – Jun 26 40–60
Watercress Mar 20 Apr 10 Apr 24 Jun 5 – Jul 10 40–60
Watermelon Mar 20 May 1 May 8 Jul 17 – Sep 4 70–100
Wax Beans May 1 Jun 26 – Aug 21 50–65
Winter Melon Feb 27 May 1 May 8 Aug 7 – Sep 25 90–120
Yard Long Beans Feb 27 May 1 May 8 Jul 3 – Aug 14 55–80
Zucchini Mar 20 May 1 May 8 Jun 26 – Aug 21 45–60

🍓 Fruits to Grow in Fredericton

27 fruits that grow well in Zone 5b with planting dates for Fredericton.

Show all 27 fruits with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Alpine Strawberries May 15 Aug 14 – Oct 30 90–180
Aronia May 15 730–1095
Blackberries May 15 365–730
Blueberries May 15 730–1095
Boysenberries May 15 365–730
Cantaloupe May 15 Jul 24 – Aug 28 70–90
Che Fruit May 15 1095–1825
Cranberries May 15 730–1095
Currants May 15 730–1095
Elderberries May 15 730–1095
Goji Berries May 15 730–1095
Gooseberries May 15 730–1095
Grapes May 15 730–1095
Ground Cherry May 15 Jul 24 – Sep 18 65–80
Hardy Kiwi May 15 1095–1825
Haskaps May 15 730–1095
Honeydew May 15 Aug 7 – Sep 18 80–110
Jostaberry May 15 730–1095
Lingonberries May 15 730–1095
Medlar May 15 1095–1825
Mulberries May 15 730–1825
Pawpaw May 15 1095–2555
Persimmon May 15 1095–2555
Quince May 15 1095–1825
Raspberries May 15 365–730
Serviceberries May 15 730–1095
Strawberries May 15 Aug 14 – Oct 30 90–365

🌿 Herbs to Grow in Fredericton

37 herbs that grow well in Zone 5b with planting dates for Fredericton.

Show all 37 herbs with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Angelica Mar 20 Apr 10 Apr 17 365–730
Anise Mar 20 Apr 10 Apr 17 Jul 17 – Oct 2 90–120
Basil Mar 6 May 1 May 8 Jul 3 – Sep 4 50–75
Bee Balm May 1 Jul 31 – Oct 16 90–120
Borage Mar 20 Apr 10 Apr 17 Jun 12 – Jul 31 50–60
Caraway Mar 20 Apr 10 Apr 17 365–450
Catnip May 1 Jul 3 – Sep 4 60–80
Chamomile Mar 20 Apr 10 Apr 17 Jun 19 – Aug 28 60–90
Chervil Mar 20 Apr 10 Apr 17 May 29 – Jul 31 40–60
Chives May 1 Jul 3 – Sep 11 60–90
Cilantro Mar 20 Apr 10 Apr 17 May 29 – Jul 31 40–60
Comfrey May 1 Jul 3 – Sep 11 60–90
Cumin Mar 20 Apr 10 Apr 17 Jul 31 – Oct 2 100–120
Dill Mar 20 Apr 10 Apr 17 May 29 – Jul 31 40–60
Echinacea May 1 Sep 4 – Oct 16 120–180
Epazote Mar 6 May 1 May 8 Jun 26 – Aug 21 45–60
Fennel (herb) Mar 20 Apr 10 Apr 17 Jun 19 – Aug 28 60–90
Feverfew May 1 Jul 31 – Oct 16 90–120
Garlic Chives May 1 Jul 3 – Sep 11 60–90
Horehound May 1 Jul 17 – Sep 11 75–90
Hyssop May 1 Jul 10 – Sep 11 70–90
Lavender May 1 Jul 31 – Oct 16 90–200
Lemon Balm May 1 Jul 3 – Aug 21 60–70
Lemon Thyme May 1 Jul 10 – Sep 11 70–90
Lovage May 1 Jul 10 – Sep 11 70–90
Mint May 1 Jul 3 – Sep 11 60–90
Oregano May 1 Jul 3 – Sep 11 60–90
Parsley Mar 20 Apr 10 Apr 17 Jun 19 – Aug 21 60–80
Rue May 1 Jul 10 – Sep 11 70–90
Sage May 1 Jul 17 – Sep 11 75–90
Savory May 1 Jun 26 – Aug 21 50–70
Sorrel Mar 20 Apr 10 Apr 17 May 29 – Jul 31 40–60
Tarragon May 1 Jul 3 – Sep 11 60–90
Thai Basil Mar 6 May 1 May 8 Jul 3 – Sep 4 50–75
Thyme May 1 Jul 10 – Sep 11 70–90
Valerian May 1 Sep 4 – Oct 16 120–180
Yarrow May 1 Jul 31 – Oct 16 90–120

Monthly Planting Guide for Fredericton

Gardening Guides & Resources

Helpful guides from The Ultimate Homestead to improve your garden in Fredericton.

🌱

Plan Your Garden with Confidence

Get our free Garden Planner — designed to help Fredericton gardeners in Zone 5b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Level Up Your Garden

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates represent 50% probability averages; local conditions vary by elevation and microclimate. Last updated: April 2026.