Amaranth · Siu Lek Yuen, Sha Tin, Hong Kong
When to plant amaranth in Siu Lek Yuen
Main outdoor window
1 Mar - 15 Apr
A climate estimate. Check your soil, forecast and cultivar.
Timed from temperature
March to November
No frost on record in Siu Lek Yuen, so the months this crop fits in our temperature model set the timing. This does not confirm local suitability.
Ready to pick
9 Jun - 9 Jul
If you plant at the start of the window.
Temperature-based estimate. Siu Lek Yuen has no dependable frost season.
These dates do not account for rain, humidity or waterlogging. Check the local growing season,
especially in monsoon climates, before treating this window as a planting recommendation.
Rainfall check: the wettest month is June (about 282 mm), and the driest is
December (about 25 mm).
Compare all months and check the limitations before choosing the season.
Step by step in Siu Lek Yuen
Download these planting dates (.ics)
Import into Apple Calendar, Google Calendar or Outlook. Dates use the selected risk level and are planning estimates, not frost alerts.
Each window is a planning range. Check the forecast, soil and cultivar before planting; a later date is not automatically safer in hot or wet conditions.
Sow direct
1 Mar - 15 Apr
The opening weeks of the stretch when the average temperature suits this crop, which here runs from March to November. There is no frost to work around, so heat is what sets the timing.
Harvest
9 Jun - 9 Jul
Amaranth through the year
Against the monthly temperature record in Siu Lek Yuen
Seasonal context
Rainfall and the growing season in Siu Lek Yuen
June has the highest average precipitation (282 mm); December has the lowest (25 mm). Compare this pattern with the planting windows and your water supply.
During wetter months, check that beds and containers drain after heavy rain. During drier months, plan how you will keep seeds and new transplants watered. Monthly averages can hide long dry spells and intense storms; they do not show soil moisture, humidity or this week's weather.
Frost-free does not mean every month is suitable. In tropical and monsoon climates, rainfall, heat, drainage and the cultivar can set the practical growing season. Match the temperature window to these conditions and check advice from a local grower before buying planting material.
Source: NASA POWER, corrected MERRA-2 precipitation, 2001–2020. Values are approximate monthly totals, including the water equivalent of snow, from the nearest 0.5° × 0.625° grid cell. This reference period differs from the temperature record. Rainfall provides context and does not change the calculated planting dates. Method and limitations.
Monthly growing conditions in Siu Lek Yuen
Compare the planting window with the local temperature pattern. These are historical monthly averages, not this year's forecast or measured soil temperatures. Average frost days do not tell you whether a particular night will freeze.
| Month | Average low | Average high | Frost days |
|---|---|---|---|
| January | 12.8°C (55°F)55°F (12.8°C) | 20°C (68°F)68°F (20°C) | 0.0 |
| February | 14.5°C (58.1°F)58.1°F (14.5°C) | 21.2°C (70.1°F)70.1°F (21.2°C) | 0.0 |
| March | 17.5°C (63.5°F)63.5°F (17.5°C) | 23.7°C (74.6°F)74.6°F (23.7°C) | 0.0 |
| April | 20.9°C (69.6°F)69.6°F (20.9°C) | 26.3°C (79.4°F)79.4°F (26.3°C) | 0.0 |
| May | 24.1°C (75.3°F)75.3°F (24.1°C) | 28.6°C (83.4°F)83.4°F (28.6°C) | 0.0 |
| June | 26.4°C (79.6°F)79.6°F (26.4°C) | 29.6°C (85.4°F)85.4°F (29.6°C) | 0.0 |
| July | 27°C (80.6°F)80.6°F (27°C) | 30.3°C (86.5°F)86.5°F (30.3°C) | 0.0 |
| August | 26.8°C (80.2°F)80.2°F (26.8°C) | 30.2°C (86.3°F)86.3°F (30.2°C) | 0.0 |
| September | 25.6°C (78°F)78°F (25.6°C) | 29.8°C (85.7°F)85.7°F (29.8°C) | 0.0 |
| October | 22.4°C (72.4°F)72.4°F (22.4°C) | 28.1°C (82.5°F)82.5°F (28.1°C) | 0.0 |
| November | 18.5°C (65.3°F)65.3°F (18.5°C) | 25.2°C (77.4°F)77.4°F (25.2°C) | 0.0 |
| December | 13.6°C (56.5°F)56.5°F (13.6°C) | 21.1°C (70°F)70°F (21.1°C) | 0.0 |
For amaranth, also check drainage, sunlight and cultivar requirements. See the rainfall context above; humidity, irrigation and local pest pressure are not calculated.
Local growing check
Before choosing amaranth for Siu Lek Yuen
- June is the wettest month in the rainfall grid, averaging about 282 mm. Check how your own bed drains and plan watering around actual soil moisture; monthly rain totals are not an irrigation schedule.
The temperature and rainfall tables on this page show the underlying climate estimates. How these suitability checks work · Record what happens in your garden.
Before you plant amaranth
Use the calendar to plan ahead, then check the conditions in your own garden.
- Measure the soil at sowing depth. Aim for at least 18°C (64.4°F); the calendar estimates soil warmth from air temperatures and cannot measure your bed.
- In a frost-free climate, check seasonal rainfall, humidity and heat before planting. A month with suitable average temperatures can still be too wet, dry or hot for this crop.
- Harden off plants raised indoors: gradually expose them to outdoor light, wind and temperature before their final move into the bed.
- Use the maturity range on your seed packet when choosing a variety. Cold, short days and transplant stress can make harvest later than the calendar estimate.
Choose grain amaranth and reserve heads for mature seed
Use a warm, sunny, drained position with enough room for mature plants. Mark rows so seedlings are not confused with related weeds. Avoid judging seed potential only from the size or colour of ornamental flower heads.
Inspect heads for mature seed release, then collect and dry them over a surface that catches the tiny grain. Clean carefully before storage and measure usable yield after chaff is removed. A trial patch helps establish whether hand processing is worthwhile.
What to record this season
Did seed ripen fully, and what weight remained after drying and cleaning? Add the cultivar, sowing date and conditions to your growing record so you can compare next season.
Further reading: Plants For A Future: Amaranthus cruentus . General crop guidance; local dates on this site are calculated separately. Source checked 19 September 2026 by Safe to Plant; this is not an expert review.
Plants For A Future compiles botanical and cultivation references. This is general species guidance, not a local field trial or evidence that every cultivar will crop in your climate.
How the dates are calculated and their limits · Keep a growing record · Report a local discrepancy
Why these dates
Frost-relative timing needs a dependable seasonal frost date. Siu Lek Yuen has no such date in this record, so this page compares monthly temperatures with the crop's model range instead. Local wet and dry seasons, day length and cultivar requirements still need a separate check.
The model uses a growing-temperature band for amaranth between 18°C (64.4°F)64.4°F (18°C) and 32°C (89.6°F)89.6°F (32°C) — and in Siu Lek Yuen that is March to November, 9 months of the year, taken from this location's own monthly averages. The planting window begins near the start of this period. The catalog estimate is 100 to 130 days from planting to maturity under suitable conditions.
Nearby
Amaranth in places close by
Also in Siu Lek Yuen
Other grains to time
Growing amaranth in Siu Lek Yuen
Can I grow amaranth in Siu Lek Yuen?
The calendar estimates a planting window, not a guarantee of success. June is the wettest month in the rainfall grid, averaging about 282 mm. Check how your own bed drains and plan watering around actual soil moisture; monthly rain totals are not an irrigation schedule.
When should I plant amaranth in Siu Lek Yuen?
The temperature-based window is 1 Mar - 15 Apr. Siu Lek Yuen has no dependable frost season: March to November have monthly averages inside the model range for amaranth. Check seasonal rainfall, heat and cultivar requirements before planting.
When might amaranth be ready to harvest in Siu Lek Yuen?
The estimated period is 9 Jun - 9 Jul, based on 100 to 130 days from the modeled planting date. Cultivar, planting material and growing conditions can change this interval; check the plant as well as the calendar.
How much frost will amaranth tolerate?
Check the named variety and local forecast before exposing young growth. The catalog cold-damage figure is a reference, not a guarantee: plant age, acclimatisation, wind and the duration of a freeze affect damage.