Growing Nasturtium in Anchorage
🇺🇸 Zone 1 Planting Guide · Subarctic climate
Quick Answer: Growing Nasturtium in Anchorage
Yes, you can grow Nasturtium in Anchorage, US! Plant during May, Jun, Jul, Aug for best results. Anchorage is in USDA Zone 1 with a Subarctic climate, offering 120 frost-free days per year. The difficulty level is easy, and Nasturtium takes 35-52 days to harvest. Nasturtium needs full sun to partial shade and low watering.
Climate Match Analysis
Anchorage's climate requires careful timing. Winter lows (-15°C) drop below Nasturtium's minimum (5°C), so avoid cold months. Follow the recommended planting months for success.
Anchorage Climate Data
Nasturtium Planting Calendar for Anchorage
Green months show the best time to plant Nasturtium in Anchorage
Nasturtium Growing Requirements
Sunlight
Full Sun to Partial Shade
2-4 hours direct sunlight
Water
Low
Drought tolerant, water sparingly
Days to Harvest
35-52
From planting to first harvest
Difficulty
Great for beginners
💡 Growing Tips for Nasturtium
Poor soil produces more flowers. Seeds are large and easy for kids. Wait until soil warms to at least 15°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Overwatering is the most common mistake. Let soil dry out between waterings and ensure drainage is excellent.
Frost tolerance: Nasturtium is NOT frost tolerant — wait until after the last frost in Anchorage.
How to Grow Nasturtium in Anchorage
Anchorage, US is in USDA Hardiness Zone 1 with a Subarctic climate (Köppen Dfc). With winter lows of -15°C and summer highs of 18°C, the growing season spans approximately 120 frost-free days. Nasturtium is one of the easiest plants to grow in this climate.
Nasturtium thrives in temperatures between 15°C and 25°C, requiring full sun to partial shade and low watering. In Anchorage, the best months to plant Nasturtium are May, June, July, August. Nasturtium is not frost tolerant, so it's important to wait until after the last spring frost before transplanting outdoors. Expect to harvest in approximately 35-52 days after planting.
Anchorage receives only 406mm of annual rainfall, so consistent irrigation will be essential for growing Nasturtium successfully.
Other Plants That Grow in Anchorage
More plants you can grow alongside Nasturtium in Anchorage
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Frequently Asked Questions
Can I grow nasturtium in Anchorage?
Yes! Nasturtium can be successfully grown in Anchorage, US. Anchorage is in USDA Hardiness Zone 1 with a Subarctic climate. The difficulty level for growing Nasturtium here is rated "easy". The best months to plant are May, June, July, August.
When should I plant nasturtium in Anchorage?
In Anchorage, the recommended planting months for Nasturtium are May, June, July, August. Anchorage has 120 frost-free days per year, with winter lows of -15°C and summer highs of 18°C. Since Nasturtium is not frost tolerant, make sure to plant after the last frost date.
How long does nasturtium take to grow in Anchorage?
Nasturtium typically takes 35-52 days from planting to harvest. In Anchorage's Subarctic climate with 120 frost-free days, you have enough time with good planning to grow Nasturtium to maturity. Poor soil produces more flowers. Seeds are large and easy for kids. Wait until soil warms to at least 15°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Overwatering is the most common mistake. Let soil dry out between waterings and ensure drainage is excellent.
Can I grow nasturtium indoors in Anchorage?
Nasturtium can potentially be grown indoors in Anchorage with proper conditions. It requires full sun to partial shade (2-4 hours of indirect light). Indoor growing extends your season beyond the May, Jun, Jul, Aug outdoor planting window. Use containers with good drainage and low watering.
What month do I plant nasturtium in Anchorage?
Plant Nasturtium in Anchorage during May, June, July, August. These are the optimal months based on Anchorage's USDA Zone 1 climate, 120 frost-free days, and temperature range of -15°C to 18°C.
Is nasturtium hard to grow in Anchorage?
Nasturtium is rated "easy" to grow in Anchorage. This is a great choice for beginners — it is forgiving and adapts well to this climate. The climate match for Nasturtium in Anchorage is Moderate.
What grows well with nasturtium in Anchorage?
In Anchorage, you can grow many companion plants alongside Nasturtium. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Anchorage's Zone 1 climate.
Does nasturtium need full sun in Anchorage?
Nasturtium requires full sun to partial shade. Nasturtium tolerates lower light. In Anchorage, a spot with filtered or indirect light for 2-4 hours works well.