Frost Dates for Natrona Heights, PA 15065
Last spring frost May 13 · First fall frost October 7 · 147 frost-free days · USDA Zone 6b
ZIP 15065 has about 10,900 people.
Moderate season: 147 frost-free days. Spring frost risk spans April 25–May 28 (33 days). Fall frost risk spans September 20–October 24 (34 days).
Frost probability for 15065
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 28 | May 13 | April 25 |
| Fall (first frost) | September 20 | October 7 | October 24 |
Dates come from NOAA 1971–2000 freeze probabilities at SALINA 3 W (21.2 km away); the 50% date is the median year.
Which crops fit a 147-day season in Natrona Heights
In Natrona Heights (147 frost-free days, a moderate season), 37 of 56 planner crops fit outright, 18 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 8 | May 27–Jun 3 | 105 | fits: 80 days to maturity, 105 available after May 27. | Jun 7 |
| Pepper | Apr 1 | May 27–Jun 3 | 105 | fits: 75 days to maturity, 105 available after May 27. | Jun 12 |
| Lettuce | Mar 18 | Apr 15–Apr 22 | 182 | two-plantings: Plant Apr 15 and again by Aug 16; both mature before Oct 14. | Aug 16 |
| Carrots | — | Apr 22–Apr 29 | 189 | fits: 70 days to maturity, 189 available after Apr 22. | Aug 5 |
| Cucumber | Apr 22 | May 27–Jun 3 | 119 | fits: 60 days to maturity, 119 available after May 27. | Jul 11 |
| Beans | — | May 20–Jun 3 | 133 | fits: 60 days to maturity, 133 available after May 20. | Jul 18 |
| Peas | — | Mar 18–May 27 | 210 | fits: 65 days to maturity, 210 available after Mar 18. | Jul 27 |
| Zucchini | Apr 29 | May 27–Jun 3 | 119 | fits: 55 days to maturity, 119 available after May 27. | Jul 16 |
| Onion | Feb 18 | Apr 15–Apr 29 | 182 | fits: 100 days to maturity, 182 available after Apr 15. | — |
| Spinach | — | Mar 18–May 6 | 224 | two-plantings: Plant Mar 18 and again by Sep 4; both mature before Oct 28. | Sep 4 |
| Kale | Mar 4 | Apr 15–Apr 29 | 196 | two-plantings: Plant Apr 15 and again by Aug 20; both mature before Oct 28. | Aug 20 |
| Broccoli | Mar 18 | Apr 15–Apr 29 | 182 | fits: 80 days to maturity, 182 available after Apr 15. | Jul 12 |
| Cabbage | Mar 18 | Apr 15–Apr 29 | 196 | fits: 70 days to maturity, 196 available after Apr 15. | Aug 5 |
| Radish | — | Mar 18–Jun 10 | 210 | two-plantings: Plant Mar 18 and again by Sep 5; both mature before Oct 14. | Sep 5 |
| Beets | — | Mar 18–Jun 10 | 210 | two-plantings: Plant Mar 18 and again by Aug 6; both mature before Oct 14. | Aug 6 |
| Potatoes | — | Apr 29–May 6 | 168 | fits: 90 days to maturity, 168 available after Apr 29. | — |
| Garlic | — | Oct 7 | 252 | overwinter: Plant Oct 7 to Oct 28; harvest the following summer. | Oct 28 |
| Strawberry | — | Apr 8–Jun 3 | 203 | perennial: A perennial: plant Apr 8; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 15 | May 20–May 27 | 119 | fits: 75 days to maturity, 119 available after May 20. | Jun 19 |
| Pumpkin | Apr 29 | May 27–May 27 | 112 | fits: 100 days to maturity, 112 available after May 27. | — |
| Cauliflower | Apr 1 | May 6–May 20 | 161 | fits: 75 days to maturity, 161 available after May 6. | Jul 17 |
| Swiss Chard | Mar 18 | Apr 29–Apr 29 | 168 | two-plantings: Plant Apr 29 and again by Aug 6; both mature before Oct 14. | Aug 6 |
| Arugula | — | Mar 18–Jun 10 | 224 | two-plantings: Plant Mar 18 and again by Sep 4; both mature before Oct 28. | Sep 4 |
| Brussel Sprouts | Mar 18 | Apr 15–Apr 29 | 196 | fits: 100 days to maturity, 196 available after Apr 15. | Jul 6 |
| Butternut Squash | Apr 29 | May 27–Jun 3 | 112 | fits: 100 days to maturity, 112 available after May 27. | — |
| Eggplant | Mar 25 | May 27–Jun 3 | 105 | fits: 70 days to maturity, 105 available after May 27. | Jun 17 |
| Okra | Apr 15 | May 20–May 27 | 126 | two-plantings: Plant May 20 and again by Jul 16; both mature before Sep 23. | Jul 16 |
| Basil | Apr 8 | Jun 3–Jun 3 | 112 | fits: 60 days to maturity, 112 available after Jun 3. | Jul 11 |
| Cilantro | — | Apr 15–May 6 | 182 | two-plantings: Plant Apr 15 and again by Aug 11; both mature before Oct 14. | Aug 11 |
| Parsley | Mar 4 | May 20–May 27 | 147 | fits: 70 days to maturity, 147 available after May 20. | Jul 22 |
| Celery | Mar 4 | May 20–Jun 3 | 147 | fits: 120 days to maturity, 147 available after May 20. | Jun 2 |
| Scallions | Mar 4 | Apr 15–Apr 29 | 196 | two-plantings: Plant Apr 15 and again by Aug 15; both mature before Oct 28. | Aug 15 |
| Turnip | — | Apr 15–Apr 29 | 196 | two-plantings: Plant Apr 15 and again by Aug 25; both mature before Oct 28. | Aug 25 |
| Kohlrabi | — | Apr 1–Apr 15 | 210 | two-plantings: Plant Apr 1 and again by Aug 20; both mature before Oct 28. | Aug 20 |
| Bok Choy | Apr 15 | May 6–May 13 | 161 | two-plantings: Plant May 6 and again by Aug 16; both mature before Oct 14. | Aug 16 |
| Collards | Mar 4 | Apr 15–Apr 29 | 196 | two-plantings: Plant Apr 15 and again by Aug 15; both mature before Oct 28. | Aug 15 |
| Cantaloupe | Apr 29 | May 27–Jun 3 | 105 | fits: 85 days to maturity, 105 available after May 27. | Jun 2 |
| Chives | Feb 18 | May 20–May 27 | 161 | fits: 90 days to maturity, 161 available after May 20. | — |
| Dill | — | Mar 18–Jun 10 | 210 | two-plantings: Plant Mar 18 and again by Aug 6; both mature before Oct 14. | Aug 6 |
| Oregano | Mar 4 | May 20–May 27 | 161 | fits: 80 days to maturity, 161 available after May 20. | — |
| Rosemary | Feb 18 | May 20–May 27 | 147 | fits: 80 days to maturity, 147 available after May 20. | — |
| Sage | Mar 18 | May 20–May 27 | 161 | fits: 75 days to maturity, 161 available after May 20. | — |
| Thyme | Mar 4 | May 20–May 27 | 161 | fits: 90 days to maturity, 161 available after May 20. | — |
| Calendula | Apr 1 | Apr 29–May 13 | 168 | two-plantings: Plant Apr 29 and again by Aug 11; both mature before Oct 14. | Aug 11 |
| Cosmos | Apr 15 | May 13–May 27 | 133 | fits: 60 days to maturity, 133 available after May 13. | Jul 11 |
| Lavender | Feb 18 | May 13–May 27 | 168 | fits: 90 days to maturity, 168 available after May 13. | — |
| Marigolds | Apr 1 | May 13–May 20 | 133 | two-plantings: Plant May 13 and again by Jul 21; both mature before Sep 23. | Jul 21 |
| Melons | Apr 29 | May 27–Jun 3 | 105 | fits: 85 days to maturity, 105 available after May 27. | Jun 2 |
| Mint | — | May 13–May 27 | 168 | fits: 90 days to maturity, 168 available after May 13. | — |
| Nasturtiums | Apr 15 | May 13–May 20 | 133 | two-plantings: Plant May 13 and again by Jul 16; both mature before Sep 23. | Jul 16 |
| Pole Beans | — | May 20–Jun 3 | 126 | fits: 65 days to maturity, 126 available after May 20. | Jul 6 |
| Spaghetti Squash | Apr 29 | May 27–Jun 3 | 112 | fits: 90 days to maturity, 112 available after May 27. | Jun 4 |
| Sunflowers | — | May 13–May 27 | 133 | fits: 70 days to maturity, 133 available after May 13. | Jul 1 |
| Tomatillos | Mar 18 | May 20–May 27 | 112 | fits: 75 days to maturity, 112 available after May 20. | Jun 12 |
| Watermelon | Apr 29 | May 20–May 27 | 112 | fits: 80 days to maturity, 112 available after May 20. | Jun 7 |
| Yellow Squash | Apr 29 | May 27–Jun 3 | 119 | fits: 55 days to maturity, 119 available after May 27. | Jul 16 |
| Zinnias | Apr 15 | May 13–May 27 | 133 | fits: 60 days to maturity, 133 available after May 13. | Jul 11 |
Month by month in Natrona Heights
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 18), Lavender (Feb 18), Onion (Feb 18), Rosemary (Feb 18). |
| March | Start indoors: Celery (Mar 4), Collards (Mar 4), Kale (Mar 4), Oregano (Mar 4), Parsley (Mar 4), Scallions (Mar 4), +9 more. Direct sow from: Arugula (Mar 18), Beets (Mar 18), Dill (Mar 18), Peas (Mar 18), Radish (Mar 18), Spinach (Mar 18). |
| April | Start indoors: Calendula (Apr 1), Cauliflower (Apr 1), Marigolds (Apr 1), Pepper (Apr 1), Basil (Apr 8), Tomato (Apr 8), +15 more. Direct sow from: Kohlrabi (Apr 1), Cilantro (Apr 15), Turnip (Apr 15), Carrots (Apr 22), Potatoes (Apr 29). Transplant from: Broccoli (Apr 15), Brussel Sprouts (Apr 15), Cabbage (Apr 15), Collards (Apr 15), Kale (Apr 15), Lettuce (Apr 15), +4 more. Plant: Strawberry (Apr 8). |
| May | Direct sow from: Sunflowers (May 13), Beans (May 20), Pole Beans (May 20). Transplant from: Bok Choy (May 6), Cauliflower (May 6), Cosmos (May 13), Lavender (May 13), Marigolds (May 13), Mint (May 13), +24 more. Last frost around May 13. |
| June | Transplant from: Basil (Jun 3). Last sowing dates: Cantaloupe (Jun 2), Celery (Jun 2), Melons (Jun 2), Spaghetti Squash (Jun 4), Tomato (Jun 7), Watermelon (Jun 7), +4 more. |
| July | Last sowing dates: Sunflowers (Jul 1), Brussel Sprouts (Jul 6), Pole Beans (Jul 6), Basil (Jul 11), Cosmos (Jul 11), Cucumber (Jul 11), +11 more. |
| August | Last sowing dates: Cabbage (Aug 5), Carrots (Aug 5), Beets (Aug 6), Dill (Aug 6), Swiss Chard (Aug 6), Calendula (Aug 11), +8 more. |
| September | Last sowing dates: Arugula (Sep 4), Spinach (Sep 4), Radish (Sep 5). |
| October | Direct sow from: Garlic (Oct 7). First frost around October 7. Last sowing dates: Garlic (Oct 28). |
| November | Harvest remaining cold-hardy crops: kale, carrots, and beets. Plant garlic bulbs for next year. |
| December | Clean up spent plants. Add compost to beds. Rest, review, and plan next year's garden. |
Frequently Asked Questions
What is the last frost date for Natrona Heights, PA (ZIP 15065)?
The median last spring frost date for Natrona Heights, PA (ZIP code 15065) is around May 13. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area. One year in ten frost ends before April 25; one in ten it runs past May 28.
What is the first fall frost date in Natrona Heights, PA?
The median first fall frost date for Natrona Heights, PA is around October 7. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses. The first frost arrives around September 20 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Natrona Heights, PA?
The frost-free growing season in Natrona Heights is about 147 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side. In Natrona Heights (147 frost-free days, a moderate season), 37 of 56 planner crops fit outright, 18 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Natrona Heights, PA?
Natrona Heights, PA is in USDA hardiness zone 6b (2023 USDA Plant Hardiness Zone Map). Zones come from the average coldest winter temperature, so they tell you which perennials survive the winter; the frost dates on this page tell you when to plant.
When should I start tomatoes indoors in Natrona Heights, PA?
Start tomatoes indoors Apr 8 and plant out May 27 in Natrona Heights. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Natrona Heights?
Two: plant Apr 15 and again by Aug 16; both mature before Oct 14.
When do I plant garlic in Natrona Heights?
Oct 7 to Oct 28; it overwinters and is ready the following summer.
Which nearby ZIP has a longer season?
New Kensington (ZIP 15068) has 159 frost-free days, 12 more than Natrona Heights (ZIP 15065). See New Kensington ZIP 15068 frost dates
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