Snapdragon · Guarulhos, São Paulo, Brazil
When to plant snapdragons in Guarulhos
Main outdoor window
year-round warmth
A climate estimate. Check your soil, forecast and cultivar.
Timed from temperature
every month
No frost on record in Guarulhos, so the months this crop fits in our temperature model set the timing. This does not confirm local suitability.
First flowers
90–120 days
After planting. With no frost to close the season, the count from sowing is an estimate under suitable growing conditions.
Temperature-based estimate. Guarulhos 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 January (about 228 mm), and the driest is
August (about 37 mm).
Compare all months and check the limitations before choosing the season.
Step by step in Guarulhos
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.
Plant out
1 Jul - 30 Jun
Monthly average temperatures fit the model all year. This does not rule out heatwaves or establish year-round suitability. Check rainfall, drainage, day length and cultivar needs.
Snapdragons through the year
Against the monthly temperature record in Guarulhos
Seasonal context
Rainfall and the growing season in Guarulhos
January has the highest average precipitation (228 mm); August has the lowest (37 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 Guarulhos
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 | 19.3°C (66.8°F)66.8°F (19.3°C) | 27.5°C (81.6°F)81.6°F (27.5°C) | 0.0 |
| February | 19.2°C (66.6°F)66.6°F (19.2°C) | 27.6°C (81.6°F)81.6°F (27.6°C) | 0.0 |
| March | 18.6°C (65.5°F)65.5°F (18.6°C) | 26.8°C (80.2°F)80.2°F (26.8°C) | 0.0 |
| April | 16.6°C (61.9°F)61.9°F (16.6°C) | 25.4°C (77.8°F)77.8°F (25.4°C) | 0.0 |
| May | 13.8°C (56.8°F)56.8°F (13.8°C) | 23.1°C (73.6°F)73.6°F (23.1°C) | 0.0 |
| June | 12.7°C (54.8°F)54.8°F (12.7°C) | 22.7°C (72.8°F)72.8°F (22.7°C) | 0.0 |
| July | 12°C (53.6°F)53.6°F (12°C) | 22.9°C (73.1°F)73.1°F (22.9°C) | 0.0 |
| August | 12.7°C (54.9°F)54.9°F (12.7°C) | 24.7°C (76.5°F)76.5°F (24.7°C) | 0.0 |
| September | 14.5°C (58°F)58°F (14.5°C) | 26.7°C (80°F)80°F (26.7°C) | 0.0 |
| October | 16°C (60.8°F)60.8°F (16°C) | 27.2°C (81°F)81°F (27.2°C) | 0.0 |
| November | 16.7°C (62°F)62°F (16.7°C) | 26.8°C (80.3°F)80.3°F (26.8°C) | 0.0 |
| December | 18.3°C (64.9°F)64.9°F (18.3°C) | 27.6°C (81.7°F)81.7°F (27.6°C) | 0.0 |
For snapdragons, 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 snapdragons for Guarulhos
- January is the wettest month in the rainfall grid, averaging about 228 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 snapdragons
Use the calendar to plan ahead, then check the conditions in your own garden.
- 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 stem height and grow snapdragons in a suitable cool season
Use a bright position with rich, moist but drained soil. Avoid prolonged overhead watering and give tall plants support in exposed sites. Hot weather and drying can shorten the display, so plan the season accordingly.
Remove spent flower spikes where further branching and buds are desired, and inspect leaves for rust or other disease. Record the quality of usable stems and the timing of decline to improve next year's sowing choice.
What to record this season
Which planting period produced strong flower spikes before heat or rust reduced quality? Add the cultivar, sowing date and conditions to your growing record so you can compare next season.
Further reading: NC State Extension: Antirrhinum majus . 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.
The reference describes plant identity and cultivation. Its regional calendar months and hardiness observations do not validate the calculated dates for another location.
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. Guarulhos 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 snapdragons between 5°C (41°F)41°F (5°C) and 25°C (77°F)77°F (25°C) — and in Guarulhos every monthly mean falls inside that range, which is why the headline says "year-round warmth". Monthly averages can hide unsuitable hot spells. This temperature result does not establish a year-round planting recommendation: check rainfall, drainage, day length and cultivar requirements.
Guarulhos is zone 11a, within the crop's general range. This is an initial cold-hardiness check; cultivar, exposure, drainage and unusual winters can still change the outcome.
Nearby
Snapdragons in places close by
Also in Guarulhos
Other flowers to time
Growing snapdragons in Guarulhos
Can I grow snapdragons in Guarulhos?
The calendar estimates a planting window, not a guarantee of success. January is the wettest month in the rainfall grid, averaging about 228 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 snapdragons in Guarulhos?
Guarulhos has no dependable frost season, and monthly averages fit the temperature model for snapdragons all year. This is not a year-round recommendation: check rainfall, heatwaves, day length and cultivar needs. The crop maturity guide is 90 to 120 days under suitable conditions.
How much frost will snapdragons 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.