Honolulu planting schedule
The following planting schedule is designed for people that live in Honolulu. Honolulu falls under the 12b hardiness zone. It means the average minimum temperature is between 55 to 60 °F (12.8 to 15.6 °C). These values should be taken into account when planting, because most plants cannot withstand frost, so when colder air arrives, the plants should be placed in a frost-free area.
Why do you need a planting calendar?
The planting calendar is useful for every gardener.
- Ensures your plants grow during the best temperature and light conditions, leading to healthier plants.
- Provides a continuous supply of fresh produce throughout the growing season, reducing the need to buy from stores.
- Saves water and fertilizer by using them when plants need them most, reducing waste and cost.
- Spreads gardening tasks over the season, making gardening more manageable and enjoyable
What do the dates mean?
In the table below, you can see 4 dates.
Sowing seeds indoor: Sowing seeds indoors is a crucial step in gardening, allowing gardeners to extend the growing season and ensure healthy plant development. The ideal indoor sowing date varies by plant type and local climate but generally occurs 6-8 weeks before the last expected frost date. This early start provides young plants with a controlled environment, promoting strong root systems and robust growth before transplanting outdoors. Indoor sowing helps avoid the harsh conditions of early spring, reducing the risk of frost damage and giving plants a head start. Proper timing and care during this stage are essential for a successful gardening season.
Transplanting to outdoor: Transplanting plants outdoors is typically done after the last frost date when the soil has warmed. This timing ensures that young plants can thrive without the risk of frost damage. Transplanting usually occurs 1-2 weeks after sowing seeds indoors, allowing plants to establish strong roots. Gradually acclimate seedlings to outdoor conditions through a process called hardening off, ensuring a smooth transition and promoting healthy growth.
Harvesting: Harvesting usually occurs three months after sowing seeds, depending on the specific plant’s maturity period. This timing ensures the produce reaches peak ripeness and nutritional value. Monitoring the growth and health of plants is essential to determine the precise harvesting time. Properly timed harvesting maximizes yield and flavor, providing fresh, home-grown produce at its best.
Last Month to plant: The last month a vegetable can be planted is determined by counting back from the first expected frost date, ensuring the plant has enough time to mature before cold weather arrives. Planting too late can result in stunted growth or failure to produce a harvest. Always check the specific requirements for each vegetable and your local frost dates to optimize planting times and achieve a successful yield.
Our planting calendar recommends planting your vegetables and herbs in the given months in Honolulu.
Vegetables
| Plant | Sow seeds indoor | Transplanting to outdoor | Harvesting Month | Last date |
|---|---|---|---|---|
| Cucumber | March 4 | March 11 | May 5 | October 14 |
| Brussels Sprouts | All year | All year | All year | All year |
| Tomato | All year | All year | All year | All year |
| Spinach | All Year | All Year | All Year | All Year |
| Beets | All Year | All Year | All Year | All Year |
| Zucchini | February 26 | March 4 | April 13 | November 5 |
| Cabbages | March 4 | March 11 | May 10 | October 9 |
| Potato | All year | All year | All year | All year |
| Radish | All year | All year | All year | All year |
| Broccoli | All year | All year | All year | All year |
| Carrot | All Year | All Year | All Year | All Year |
| Cauliflower | All year | All year | All year | All year |
| Onion | All year | All year | All year | All year |
Herbs
| Plant | Sow seeds indoor | Transplanting to outdoor | Harvesting Month | Last date |
|---|---|---|---|---|
| Parsley | All year | All year | All year | All year |
| Dill | February 23 | March 4 | April 1 | November 17 |
| Fennel | All year | All year | All year | All year |
| Sage | All year | All year | All year | All year |
| Thyme | All year | All year | All year | All year |
| Oregano | All year | All year | All year | All year |
| Mustard | All year | All year | All year | All year |
| Mint | All year | All year | All year | All year |
| Lavender | All-year | All-year | All-year | All-year |
| Rosemary | All year | All year | All year | All year |
| Ginger | All year | All year | All year | All year |
| Basil | All year | All year | All year | All year |
| Cilantro | All year | All year | All year | All year |
When can you grow Cucumber in Honolulu?
You can start sowing your seeds on March 4, because during this period, night temperatures are already stable above 61 °F (16 °C) in Honolulu. This is the minimum temperature Cucumber can tolerate. Then, wait for days for germination. After that, you can transplant your Cucumber to outdoor on March 11. It takes days to grow you plant, so you can harvest it on May 5. You can plant your Cucumber until October 14.
When can you grow Brussels Sprouts in Honolulu?
You can plant Brussels Sprouts in your city all year! Just remember that the plant takes days to germinate from seeds and days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Tomato in Honolulu?
You can plant Tomato in your city all year! Just remember that the plant takes days to germinate from seeds and 54 days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Parsley in Honolulu?
You can plant Parsley in your city all year! Just remember that the plant takes 20 days to germinate from seeds and 50 days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Dill in Honolulu?
You can start sowing your seeds on February 23, because during this period, night temperatures are already stable above 59 °F (15 °C) in Honolulu. This is the minimum temperature Dill can tolerate. Then, wait for days for germination. After that, you can transplant your Dill to outdoor on March 4. It takes days to grow you plant, so you can harvest it on April 1. You can plant your Dill until November 17.
When can you grow Spinach in Honolulu?
You can start sowing your seeds on All Year, because during this period, night temperatures are already stable above 36 °F (2 °C) in Honolulu. This is the minimum temperature Spinach can tolerate. Then, wait for 5 days for germination. After that, you can transplant your Spinach to outdoor on All Year. It takes 40 days to grow you plant, so you can harvest it on All Year. You need to wait for All Year to start sowing seeds.
When can you grow Fennel in Honolulu?
You can plant Fennel in your city all year! Just remember that the plant takes 14 days to germinate from seeds and 76 days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Sage in Honolulu?
You can plant Sage in your city all year! Just remember that the plant takes days to germinate from seeds and 60 days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Beets in Honolulu?
You can start sowing your seeds on All Year, because during this period, night temperatures are already stable above 41 °F (5 °C) in Honolulu. This is the minimum temperature Beets can tolerate. Then, wait for days for germination. After that, you can transplant your Beets to outdoor on All Year. It takes days to grow you plant, so you can harvest it on All Year. You need to wait for All Year to start sowing seeds.
When can you grow Thyme in Honolulu?
You can plant Thyme in your city all year! Just remember that the plant takes 20 days to germinate from seeds and 60 days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Oregano in Honolulu?
You can plant Oregano in your city all year! Just remember that the plant takes days to germinate from seeds and 45 days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Mustard in Honolulu?
You can plant Mustard in your city all year! Just remember that the plant takes days to germinate from seeds and days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Mint in Honolulu?
You can plant Mint in your city all year! Just remember that the plant takes days to germinate from seeds and 60 days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Lavender in Honolulu?
You can start sowing your seeds on All-year, because during this period, night temperatures are already stable above 41 °F (5 °C) in Honolulu. This is the minimum temperature Lavender can tolerate. Then, wait for days for germination. After that, you can transplant your Lavender to outdoor on All-year. It takes days to grow you plant, so you can harvest it on All-year. You need to wait for All-year to start sowing seeds.
When can you grow Rosemary in Honolulu?
You can plant Rosemary in your city all year! Just remember that the plant takes days to germinate from seeds and days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Zucchini in Honolulu?
You can start sowing your seeds on February 26, because during this period, night temperatures are already stable above 59 °F (15 °C) in Honolulu. This is the minimum temperature Zucchini can tolerate. Then, wait for days for germination. After that, you can transplant your Zucchini to outdoor on March 4. It takes 40 days to grow you plant, so you can harvest it on April 13. You can plant your Zucchini until November 05.
When can you grow Cabbages in Honolulu?
You can start sowing your seeds on March 4, because during this period, night temperatures are already stable above 61 °F (16 °C) in Honolulu. This is the minimum temperature Cabbages can tolerate. Then, wait for days for germination. After that, you can transplant your Cabbages to outdoor on March 11. It takes days to grow you plant, so you can harvest it on May 10. You can plant your Cabbages until October 09.
When can you grow Potato in Honolulu?
You can plant Potato in your city all year! Just remember that the plant takes days to germinate from seeds and days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Radish in Honolulu?
You can plant Radish in your city all year! Just remember that the plant takes days to germinate from seeds and 28 days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Broccoli in Honolulu?
You can plant Broccoli in your city all year! Just remember that the plant takes days to germinate from seeds and days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Carrot in Honolulu?
You can start sowing your seeds on All Year, because during this period, night temperatures are already stable above 32 °F (0 °C) in Honolulu. This is the minimum temperature Carrot can tolerate. Then, wait for 14 days for germination. After that, you can transplant your Carrot to outdoor on All Year. It takes 84 days to grow you plant, so you can harvest it on All Year. You need to wait for All Year to start sowing seeds.
When can you grow Cauliflower in Honolulu?
You can plant Cauliflower in your city all year! Just remember that the plant takes days to germinate from seeds and days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Onion in Honolulu?
You can plant Onion in your city all year! Just remember that the plant takes 9 days to germinate from seeds and 120 days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Ginger in Honolulu?
You can plant Ginger in your city all year! Just remember that the plant takes 28 days to germinate from seeds and 245 days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Basil in Honolulu?
You can plant Basil in your city all year! Just remember that the plant takes 10 days to germinate from seeds and 50 days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
When can you grow Cilantro in Honolulu?
You can plant Cilantro in your city all year! Just remember that the plant takes 7 days to germinate from seeds and 113 days to grow after transplanting. In addition, you can start sowing your seeds outdoor for the best outcome. There is no need to create artifical environment, thus start planting outdoor.
