Klamath County, OR — Planting Guide
Klamath County is in USDA Zone 6a. The average last spring frost is June 13 and the first fall frost is September 21, giving you a growing season of approximately 100 days.
At an elevation of 142 ft, Klamath County receives approximately 48.7 in of rainfall annually. Summer highs average 83°F with winter lows around 30°F. The predominant soil type is Silt Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 47 days year to year — ranging from May 9 in warm years to June 26 in cold years. Klamath County scores 73/100 (Good) on the Microclimate Index.
🌡️ Zone
6a (-10°F to -5°F min)
❄️ Last Frost
June 13
🍂 First Frost
September 21
📅 Growing Season
100 days
⛰️ Elevation
142 ft
🌧️ Annual Rainfall
48.7 in
Monthly Watering Calendar
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 7.4 in | 16 days | — | None |
| Feb | 5.2 in | 15 days | — | None |
| Mar | 4.8 in | 15 days | — | Low |
| Apr | 3.3 in | 11 days | 1 in | Moderate |
| May | 3 in | 10 days | 1.3 in | Moderate |
| Jun | 1.8 in | 6 days | 2.5 in | High |
| Jul | 0.9 in | 3 days | 3.4 in | Critical |
| Aug | 0.8 in | 3 days | 3.5 in | Critical |
| Sep | 2.1 in | 4 days | 2.2 in | High |
| Oct | 4.8 in | 10 days | — | Low |
| Nov | 7.7 in | 18 days | — | None |
| Dec | 6.9 in | 18 days | — | None |
Annual total: 48.7 in. 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.
Klamath County Soil Profile
Soil Type
Silt Loam
Soil pH
5.5-6.3
Drainage
Well Drained
Frost Risk Probability
Based on 31 years of NOAA weather station data from 3 stations
Beginners: Plant frost-sensitive crops (tomatoes, peppers, squash) after the "Safe" date on the left. Harvest or cover them before the "Protect by" date on the right. Hardy crops (lettuce, peas, kale) can go in the yellow transition zones.
How to read this table: "Conservative" means you're safe from frost 9 out of 10 years — best for beginners and frost-sensitive crops. "Average year" is the typical date. "Aggressive" means only 1 in 10 years is that warm — experienced gardeners with frost protection can try these dates.
| Planting Strategy | Last Spring Frost | First Fall Frost | Frost-Free Days |
|---|---|---|---|
| Conservative (safest) | Jun 26 | Oct 18 | 114 days |
| Cautious | Jun 20 | Oct 3 | 105 days |
| Average year | Jun 13 | Sep 21 | 100 days |
| Optimistic | May 30 | Sep 4 | 97 days |
| Aggressive (risky) | May 9 | Aug 13 | 96 days |
Not very — frost dates can vary by ±47 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.
Gardening Difficulty Score
Klamath County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Klamath County
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 Klamath County's climate and soil.
County Extension Office
Klamath County Oregon State University Extension Extension Office
Phone: 541-737-2713
Visit Extension Office Website →
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 Klamath County
Finding local nurseries & garden centers in Klamath County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Klamath County'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 Klamath County OR" or "garden center Klamath County" 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 Klamath County OR" or check your extension office and local parks department. Facebook groups like "Klamath County Gardeners" or "Oregon 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.
Sunlight & Day Length
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Longest Day
15.1 hours
Summer solstice daylight
Shortest Day
8.9 hours
Winter solstice daylight
Peak Sun Hours
10 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.
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
| Month | Daylight Hours | Peak Sun Hours | Day Length |
|---|---|---|---|
| January | 9.2 hr | 2.3 hr | Short day |
| February | 10.3 hr | 3 hr | Short day |
| March | 11.7 hr | 4 hr | Short day |
| April | 13.2 hr | 5.6 hr | Neutral |
| May | 14.4 hr | 7.1 hr | Long day |
| June | 15.1 hr | 8.2 hr | Long day |
| July | 14.8 hr | 10 hr | Long day |
| August | 13.7 hr | 8.9 hr | Neutral |
| September | 12.3 hr | 7.2 hr | Neutral |
| October | 10.8 hr | 4.2 hr | Short day |
| November | 9.5 hr | 2.3 hr | Short day |
| December | 8.9 hr | 1.9 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 60°F+
Soil warm enough from May through Oct.
Best Month to Compost
Jun
Microbial activity peaks when soil is warm.
Active Composting
6 months
Solid season. Piles go dormant in winter.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 31°F | 38°F | ❄️ Dormant | ~36 weeks |
| Feb | 31°F | 38°F | ❄️ Dormant | ~36 weeks |
| Mar | 38°F | 42°F | ❄️ Dormant | ~36 weeks |
| Apr | 50°F | 49°F | 🐢 Slow | ~24 weeks |
| May | 63°F | 60°F | ♻️ Active | ~14 weeks |
| Jun | 72°F | 68°F | 🔥 Peak | ~8 weeks |
| Jul | 82°F | 76°F | 🔥 Peak | ~8 weeks |
| Aug | 80°F | 78°F | 🔥 Peak | ~8 weeks |
| Sep | 76°F | 73°F | 🔥 Peak | ~8 weeks |
| Oct | 64°F | 65°F | ♻️ Active | ~14 weeks |
| Nov | 49°F | 55°F | 🐢 Slow | ~24 weeks |
| Dec | 35°F | 45°F | ❄️ Dormant | ~36 weeks |
Highlighted rows = soil 60°F+ (safe for warm-season transplants). Compost finishes fastest during peak activity months.
Pest & Disease Pressure in Klamath County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Insect Pest Pressure
Moderate — common pests appear but manageable with monitoring.
Disease Risk
Moderate — watch for mildew and blight during wet periods.
Seasonal Risk
View 6 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | Moderate | Apr, May, Jun, Jul, Aug, Sep |
| Japanese beetles | High | Jun, Jul, Aug |
| Squash vine borers | Moderate | Jun, Jul |
| Tomato hornworms | Moderate | Jun, Jul, Aug |
| Cucumber beetles | Low | May, Jun, Jul |
| Stink bugs | Low | Jun, Jul, Aug, Sep |
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 Klamath County
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 | Jun 24 | Jul 27 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | Jun 23 | Jul 20 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | May 15 | Jul 20 | ✓ 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 | Jul 13 | Sep 7 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Fall Cover Crops (7 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Austrian winter peas | Jul 21 | May 23 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Jul 20 | May 30 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Aug 1 | May 23 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 7 | May 23 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Aug 12 | May 30 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jun 20 | May 23 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jun 27 | May 23 | — | 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: 10 mph Summer: 8 mph
Fall: 8 mph Winter: 11 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
4.8/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Moderate
Some terrain variation (562 ft range). Garden on slopes or higher ground if possible to avoid late-season frost pockets.
Rainwater Harvesting Potential
How much water you can collect, when to collect it, and what size system you need for your garden.
Annual Collection
24,272 gal
Per 1,000 sq ft of roof area (at 80% collection efficiency)
Recommended Setup
6 rain barrels (55 gal each)
For a typical 500 sq ft garden. Serious collectors: consider a 2,000 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Jan, Feb, Nov, Dec
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Jul, Aug
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 48.7 inches of rain per year
- A 1,000 sq ft roof can collect roughly 24,272 gallons annually
- Rainwater harvesting is fully legal in your state
- Use a first-flush diverter to keep roof debris out of your collection
Soil & Growing Conditions in Klamath County
Soil Type
Silt Loam
Soil pH 5.5–6.3 · Excessively Drained drainage
Native soil is well-suited to most vegetables and herbs with regular compost additions.
Watering Needs
Drought stress: 3.5/10
Low-to-moderate drought stress. Plan to water 1–2 times per week during peak summer. (48.7 in. annual rainfall)
Season Tips
100-day frost-free season
A short season means indoor starts are critical for warm-season crops. Prioritise cold-hardy, fast-maturing varieties and use row covers to extend autumn harvests.
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.
Recommended for Your Garden
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Get instant, accurate soil pH readings to fine-tune your amendments.
Boost soil fertility and structure with rich, well-aged organic compost.
🥬 Vegetables to Grow in Klamath County
108 vegetables that grow well in Zone 6a with planting dates for Klamath County.
Show all 108 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | May 9 | Jun 20 | Jun 27 | Sep 19 – Oct 24 | 80–100 |
| Amaranth | Apr 18 | Jun 20 | Jun 27 | Sep 26 – Nov 14 | 90–120 |
| Arugula | May 9 | May 30 | Jun 13 | Jul 18 – Sep 19 | 30–50 |
| Asparagus | — | — | Jun 27 | — | 730–1095 |
| Beets | — | May 30 | — | Jul 25 – Aug 22 | 50–70 |
| Belgian Endive | May 9 | May 30 | Jun 13 | Oct 3 – Nov 28 | 110–150 |
| Bitter Melon | Apr 18 | Jun 20 | Jun 27 | Aug 29 – Oct 10 | 60–90 |
| Black Beans | — | Jun 20 | — | Sep 19 – Nov 7 | 90–120 |
| Bok Choy | May 9 | May 30 | Jun 13 | Jul 25 – Aug 29 | 40–60 |
| Broccoli | May 9 | May 30 | Jun 13 | Aug 15 – Sep 26 | 60–90 |
| Broccoli Rabe | May 9 | May 30 | Jun 13 | Jul 25 – Aug 29 | 40–60 |
| Brussels Sprouts | May 9 | May 30 | Jun 13 | Sep 12 – Nov 7 | 90–130 |
| Butternut Squash | May 9 | Jun 20 | Jun 27 | Sep 26 – Oct 31 | 85–110 |
| Cabbage | May 9 | May 30 | Jun 13 | Aug 15 – Oct 10 | 60–100 |
| Calabash | Apr 18 | Jun 20 | Jun 27 | Sep 19 – Nov 14 | 80–120 |
| Carrots | — | May 30 | — | Aug 1 – Sep 5 | 60–80 |
| Cauliflower | May 9 | May 30 | Jun 13 | Aug 8 – Oct 10 | 55–100 |
| Celeriac | May 9 | May 30 | Jun 13 | Sep 26 – Oct 31 | 100–120 |
| Celery | May 9 | May 30 | Jun 13 | Sep 5 – Oct 31 | 80–120 |
| Celtuce | May 9 | May 30 | Jun 13 | Aug 15 – Sep 26 | 60–90 |
| Chard | May 9 | May 30 | Jun 13 | Aug 8 – Sep 26 | 50–60 |
| Chickpeas | May 9 | May 30 | Jun 13 | Sep 5 – Oct 17 | 80–110 |
| Chicory | May 9 | May 30 | Jun 13 | Aug 15 – Sep 26 | 60–85 |
| Chinese Cabbage | May 9 | May 30 | Jun 13 | Aug 8 – Sep 5 | 50–70 |
| Christmas Lima Beans | Apr 18 | Jun 20 | Jun 27 | Sep 19 – Oct 24 | 80–100 |
| Collard Greens | May 9 | May 30 | Jun 13 | Aug 8 – Oct 10 | 55–75 |
| Corn | — | Jun 20 | — | Aug 22 – Oct 17 | 60–100 |
| Cowpeas | — | Jun 20 | — | Aug 22 – Oct 3 | 60–90 |
| Cress | May 9 | May 30 | Jun 13 | Jun 27 – Jul 18 | 14–21 |
| Crookneck Squash | May 9 | Jun 20 | Jun 27 | Aug 15 – Sep 12 | 45–60 |
| Crosne | — | May 30 | — | Oct 31 – Dec 12 | 150–200 |
| Cucumber | May 9 | Jun 20 | Jun 27 | Aug 22 – Oct 17 | 50–70 |
| Daikon | — | May 30 | — | Jul 25 – Aug 22 | 50–70 |
| Delicata Squash | May 9 | Jun 20 | Jun 27 | Sep 19 – Oct 24 | 80–100 |
| Edamame | — | Jun 20 | — | Sep 5 – Oct 17 | 75–100 |
| Eggplant | Apr 4 | Jun 20 | Jun 27 | Sep 5 – Nov 7 | 65–85 |
| Endive | May 9 | May 30 | Jun 13 | Aug 1 – Sep 5 | 45–65 |
| Escarole | May 9 | May 30 | Jun 13 | Aug 8 – Sep 5 | 50–70 |
| Fava Beans | May 9 | May 30 | Jun 13 | Aug 29 – Oct 10 | 75–100 |
| Fennel | Apr 18 | Jun 20 | Jun 27 | Aug 29 – Oct 10 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Green Beans | — | Jun 20 | — | Aug 15 – Oct 10 | 50–65 |
| Horseradish | — | — | Jun 27 | Oct 31 – Jan 9 | 120–180 |
| Hot Peppers | Apr 4 | Jun 20 | Jun 27 | Sep 5 – Dec 12 | 70–120 |
| Hubbard Squash | May 9 | Jun 20 | Jun 27 | Oct 10 – Nov 14 | 100–120 |
| Kabocha | May 9 | Jun 20 | Jun 27 | Sep 26 – Oct 24 | 85–100 |
| Kai Lan | May 9 | May 30 | Jun 13 | Aug 1 – Aug 29 | 45–60 |
| Kale | May 9 | May 30 | Jun 13 | Aug 8 – Oct 3 | 50–70 |
| Kidney Beans | — | Jun 20 | — | Sep 19 – Oct 24 | 85–110 |
| Kohlrabi | May 9 | May 30 | Jun 13 | Aug 1 – Sep 5 | 45–65 |
| Komatsuna | May 9 | May 30 | Jun 13 | Jul 18 – Aug 22 | 35–50 |
| Leeks | May 9 | May 30 | Jun 13 | Sep 12 – Nov 28 | 90–150 |
| Lentils | May 9 | May 30 | Jun 13 | Sep 5 – Oct 17 | 80–110 |
| Lettuce | May 9 | May 30 | Jun 13 | Jul 18 – Sep 26 | 30–60 |
| Lima Beans | — | Jun 20 | — | Aug 22 – Oct 3 | 60–90 |
| Loofah | Apr 18 | Jun 20 | Jun 27 | Oct 10 – Dec 12 | 100–150 |
| Luffa | Apr 18 | Jun 20 | Jun 27 | Sep 26 – Dec 12 | 90–150 |
| Mache | May 9 | May 30 | Jun 13 | Jul 25 – Aug 29 | 40–60 |
| Melon | May 9 | Jun 20 | Jun 27 | Sep 5 – Oct 24 | 70–100 |
| Microgreens | May 9 | May 30 | Jun 13 | Jun 20 – Jul 18 | 7–21 |
| Mitsuba | May 9 | May 30 | Jun 6 | Aug 1 – Sep 26 | 50–70 |
| Mizuna | May 9 | May 30 | Jun 13 | Jul 18 – Aug 15 | 30–45 |
| Mustard Greens | May 9 | May 30 | Jun 13 | Jul 18 – Sep 19 | 30–50 |
| Napa Cabbage | May 9 | May 30 | Jun 13 | Aug 8 – Sep 12 | 55–75 |
| New Zealand Spinach | Apr 18 | Jun 20 | Jun 27 | Aug 22 – Sep 19 | 55–70 |
| Okra | Apr 18 | Jun 20 | Jun 27 | Aug 22 – Oct 17 | 50–65 |
| Onion | May 9 | May 30 | Jun 13 | Sep 12 – Oct 31 | 90–120 |
| Pac Choi | May 9 | May 30 | Jun 13 | Jul 25 – Aug 22 | 40–55 |
| Parsnip | — | May 30 | — | Sep 12 – Oct 24 | 100–130 |
| Patty Pan Squash | May 9 | Jun 20 | Jun 27 | Aug 15 – Sep 12 | 45–60 |
| Peas | May 9 | May 30 | Jun 13 | Aug 8 – Oct 3 | 55–70 |
| Peppers | Apr 4 | Jun 20 | Jun 27 | Aug 29 – Nov 7 | 60–90 |
| Pole Beans | Apr 18 | Jun 20 | Jun 27 | Aug 22 – Oct 17 | 55–70 |
| Potatoes | Apr 18 | Jun 20 | Jun 27 | Sep 5 – Nov 14 | 70–120 |
| Pumpkin | May 9 | Jun 20 | Jun 27 | Sep 26 – Nov 14 | 85–120 |
| Purslane | May 9 | May 30 | Jun 13 | Jul 25 – Aug 29 | 40–60 |
| Radicchio | May 9 | May 30 | Jun 13 | Aug 15 – Sep 19 | 60–80 |
| Radish | — | May 30 | — | Jun 27 – Jul 18 | 22–35 |
| Rhubarb | — | — | Jul 4 | — | 365–730 |
| Romanesco | May 9 | May 30 | Jun 13 | Aug 29 – Oct 10 | 75–100 |
| Rutabaga | — | May 30 | — | Aug 22 – Sep 26 | 80–100 |
| Salsify | — | May 30 | — | Sep 12 – Oct 24 | 100–130 |
| Savoy Cabbage | May 9 | May 30 | Jun 13 | Aug 22 – Oct 17 | 70–110 |
| Scallions | May 9 | May 30 | Jun 13 | Aug 8 – Sep 5 | 50–70 |
| Scarlet Runner Beans | Apr 18 | Jun 20 | Jun 27 | Aug 29 – Oct 3 | 60–80 |
| Shallot | May 9 | May 30 | Jun 13 | Sep 12 – Oct 31 | 90–120 |
| Shiso | Apr 25 | Jun 20 | Jun 27 | Aug 22 – Oct 17 | 50–70 |
| Snap Peas | Apr 18 | Jun 20 | Jun 27 | Aug 22 – Oct 17 | 55–70 |
| Snow Peas | May 9 | May 30 | Jun 13 | Aug 8 – Oct 3 | 50–65 |
| Soybeans | — | Jun 20 | — | Sep 12 – Nov 7 | 80–120 |
| Spaghetti Squash | May 9 | Jun 20 | Jun 27 | Sep 26 – Oct 24 | 85–100 |
| Spinach | May 9 | May 30 | Jun 13 | Jul 18 – Sep 19 | 35–50 |
| Squash (Summer) | May 9 | Jun 20 | Jun 27 | Aug 15 – Oct 17 | 45–65 |
| Squash (Winter) | May 9 | Jun 20 | Jun 27 | Sep 19 – Nov 14 | 80–120 |
| Sunchoke | — | — | Jun 27 | Oct 17 – Dec 12 | 110–150 |
| Sunflower | Apr 18 | Jun 20 | Jun 27 | Sep 5 – Oct 24 | 70–100 |
| Sweet Corn | — | Jun 20 | — | Aug 22 – Oct 3 | 60–90 |
| Sweet Potatoes | Apr 18 | Jun 20 | Jun 27 | Sep 26 – Nov 14 | 90–120 |
| Tatsoi | May 9 | May 30 | Jun 13 | Jul 18 – Aug 22 | 35–50 |
| Tomatillo | Apr 18 | Jun 20 | Jun 27 | Aug 29 – Nov 7 | 60–85 |
| Tomatoes | Apr 18 | Jun 20 | Jun 27 | Aug 29 – Nov 7 | 60–85 |
| Turnip | — | May 30 | — | Jul 11 – Aug 15 | 40–60 |
| Watercress | May 9 | May 30 | Jun 13 | Jul 25 – Aug 29 | 40–60 |
| Watermelon | May 9 | Jun 20 | Jun 27 | Sep 5 – Oct 24 | 70–100 |
| Wax Beans | — | Jun 20 | — | Aug 15 – Oct 10 | 50–65 |
| Winter Melon | Apr 18 | Jun 20 | Jun 27 | Sep 26 – Nov 14 | 90–120 |
| Yard Long Beans | Apr 18 | Jun 20 | Jun 27 | Aug 22 – Oct 3 | 55–80 |
| Zucchini | May 9 | Jun 20 | Jun 27 | Aug 15 – Oct 10 | 45–60 |
🍓 Fruits to Grow in Klamath County
27 fruits that grow well in Zone 6a with planting dates for Klamath County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Jul 4 | Oct 3 – Jan 16 | 90–180 |
| Aronia | — | — | Jul 4 | — | 730–1095 |
| Blackberries | — | — | Jul 4 | — | 365–730 |
| Blueberries | — | — | Jul 4 | — | 730–1095 |
| Boysenberries | — | — | Jul 4 | — | 365–730 |
| Cantaloupe | — | — | Jul 4 | Sep 12 – Oct 17 | 70–90 |
| Che Fruit | — | — | Jul 4 | — | 1095–1825 |
| Cranberries | — | — | Jul 4 | — | 730–1095 |
| Currants | — | — | Jul 4 | — | 730–1095 |
| Elderberries | — | — | Jul 4 | — | 730–1095 |
| Goji Berries | — | — | Jul 4 | — | 730–1095 |
| Gooseberries | — | — | Jul 4 | — | 730–1095 |
| Grapes | — | — | Jul 4 | — | 730–1095 |
| Ground Cherry | — | — | Jul 4 | Sep 12 – Nov 7 | 65–80 |
| Hardy Kiwi | — | — | Jul 4 | — | 1095–1825 |
| Haskaps | — | — | Jul 4 | — | 730–1095 |
| Honeydew | — | — | Jul 4 | Sep 26 – Nov 7 | 80–110 |
| Jostaberry | — | — | Jul 4 | — | 730–1095 |
| Lingonberries | — | — | Jul 4 | — | 730–1095 |
| Medlar | — | — | Jul 4 | — | 1095–1825 |
| Mulberries | — | — | Jul 4 | — | 730–1825 |
| Pawpaw | — | — | Jul 4 | — | 1095–2555 |
| Persimmon | — | — | Jul 4 | — | 1095–2555 |
| Quince | — | — | Jul 4 | — | 1095–1825 |
| Raspberries | — | — | Jul 4 | — | 365–730 |
| Serviceberries | — | — | Jul 4 | — | 730–1095 |
| Strawberries | — | — | Jul 4 | Oct 3 – Jan 16 | 90–365 |
🌿 Herbs to Grow in Klamath County
38 herbs that grow well in Zone 6a with planting dates for Klamath County.
Show all 38 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | May 9 | May 30 | Jun 6 | — | 365–730 |
| Anise | May 9 | May 30 | Jun 6 | Sep 5 – Nov 21 | 90–120 |
| Basil | Apr 25 | Jun 20 | Jun 27 | Aug 22 – Oct 24 | 50–75 |
| Bee Balm | — | — | Jun 20 | Sep 19 – Dec 5 | 90–120 |
| Borage | May 9 | May 30 | Jun 6 | Aug 1 – Sep 19 | 50–60 |
| Caraway | May 9 | May 30 | Jun 6 | — | 365–450 |
| Catnip | — | — | Jun 20 | Aug 22 – Oct 24 | 60–80 |
| Chamomile | May 9 | May 30 | Jun 6 | Aug 8 – Oct 17 | 60–90 |
| Chervil | May 9 | May 30 | Jun 6 | Jul 18 – Sep 19 | 40–60 |
| Chives | — | — | Jun 20 | Aug 22 – Oct 31 | 60–90 |
| Cilantro | May 9 | May 30 | Jun 6 | Jul 18 – Sep 19 | 40–60 |
| Comfrey | — | — | Jun 20 | Aug 22 – Oct 31 | 60–90 |
| Cumin | May 9 | May 30 | Jun 6 | Sep 19 – Nov 21 | 100–120 |
| Dill | May 9 | May 30 | Jun 6 | Jul 18 – Sep 19 | 40–60 |
| Echinacea | — | — | Jun 20 | Oct 24 – Jan 2 | 120–180 |
| Epazote | Apr 25 | Jun 20 | Jun 27 | Aug 15 – Oct 10 | 45–60 |
| Fennel (herb) | May 9 | May 30 | Jun 6 | Aug 8 – Oct 17 | 60–90 |
| Feverfew | — | — | Jun 20 | Sep 19 – Dec 5 | 90–120 |
| Garlic Chives | — | — | Jun 20 | Aug 22 – Oct 31 | 60–90 |
| Horehound | — | — | Jun 20 | Sep 5 – Oct 31 | 75–90 |
| Hyssop | — | — | Jun 20 | Aug 29 – Oct 31 | 70–90 |
| Lavender | — | — | Jun 20 | Sep 19 – Jan 2 | 90–200 |
| Lemon Balm | — | — | Jun 20 | Aug 22 – Oct 10 | 60–70 |
| Lemon Thyme | — | — | Jun 20 | Aug 29 – Oct 31 | 70–90 |
| Lovage | — | — | Jun 20 | Aug 29 – Oct 31 | 70–90 |
| Marjoram | — | — | Jun 20 | Aug 22 – Oct 31 | 60–90 |
| Mint | — | — | Jun 20 | Aug 22 – Oct 31 | 60–90 |
| Oregano | — | — | Jun 20 | Aug 22 – Oct 31 | 60–90 |
| Parsley | May 9 | May 30 | Jun 6 | Aug 8 – Oct 10 | 60–80 |
| Rue | — | — | Jun 20 | Aug 29 – Oct 31 | 70–90 |
| Sage | — | — | Jun 20 | Sep 5 – Oct 31 | 75–90 |
| Savory | — | — | Jun 20 | Aug 15 – Oct 10 | 50–70 |
| Sorrel | May 9 | May 30 | Jun 6 | Jul 18 – Sep 19 | 40–60 |
| Tarragon | — | — | Jun 20 | Aug 22 – Oct 31 | 60–90 |
| Thai Basil | Apr 25 | Jun 20 | Jun 27 | Aug 22 – Oct 24 | 50–75 |
| Thyme | — | — | Jun 20 | Aug 29 – Oct 31 | 70–90 |
| Valerian | — | — | Jun 20 | Oct 24 – Jan 2 | 120–180 |
| Yarrow | — | — | Jun 20 | Sep 19 – Dec 5 | 90–120 |
Monthly Planting Guide for Klamath County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Klamath County.
Frequently Asked Questions
What planting zone is Klamath County, OR?
Klamath County is in USDA Hardiness Zone 6a. This zone classification determines which perennial plants survive winter and sets the baseline for frost timing across the county.
When is the last frost in Klamath County, OR?
Based on 31 years of NOAA weather station data, the median last spring frost in Klamath County falls around June 13. In 8 out of 10 years, last frost lands between May 9 and June 26 — a 47-day window of variability. Use June 26 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Klamath County, OR?
The median first fall frost in Klamath County arrives around September 21. In cold years it can arrive as early as August 13; in mild years as late as October 18. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Klamath County?
Klamath County has a frost-free growing season of approximately 100 days. Focus on short-season varieties and start warm-season crops indoors 6–8 weeks before last frost.
What is the soil like in Klamath County for gardening?
Klamath County has predominantly Silt Loam soil with a pH range of 5.5–6.3 and Excessively Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Klamath County?
Klamath County has commercial agriculture that includes Wheat, Hay, Apples, Potatoes, Berries. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Klamath County a good location for home gardening?
Klamath County scores 73/100 (Good) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. This is an above-average location for home gardening with relatively predictable growing conditions.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Klamath County gardeners in Zone 6a 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.
