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The Complete Guide to Growing Cannabis Outdoors in Thailand 🌿🌞

May 11, 2023

Outdoor growing in Thailand


Outdoor cannabis has often been overshadowed by its indoor counterpart, with indoor-grown cannabis being perceived as more potent and flavorful. However, this perception is a misconception. In reality, outdoor-grown cannabis offers a fuller spectrum of cannabinoids and terpenes. By harnessing the natural power of the sun, outdoor cultivation eliminates the need for expensive artificial lights, air conditioning, and dehumidifiers. In this comprehensive guide, we will take you through the step-by-step process of growing cannabis outdoors in Thailand, considering the unique weather and climate of the region. From soil selection to watering, fertilization to seed germination, flowering to harvesting, and beyond, we will cover every aspect of successful outdoor cannabis cultivation. Let’s delve into the world of growing cannabis under the Thai sun. πŸŒΏπŸŒžπŸŒ±πŸ’š

Step 1: Planning Ahead

Before you begin your outdoor cannabis cultivation journey, it is essential to plan ahead. Consider the optimal time to plant your cannabis outdoors in Thailand, taking into account the ideal temperature range for successful growth. In Thailand, the recommended temperature range for cannabis cultivation is 20-28 degrees Celsius. πŸ—“οΈπŸŒ‘οΈ

Step 2: Selecting the Perfect Growing Spot

Choosing the right location is crucial for your outdoor cannabis garden. Look for an area that receives abundant sunlight throughout the day. Remember, cannabis thrives in full sun exposure, so select a spot with minimal shade. But if temperatures do soar above 30 degrees which let’s be honest this is Thailand, consider gently spraying your leaves and soil with water every hour during the hottest times of the day. 🌞🌳

How do growers deal with shorter sunlight hours in Thailand?

When dealing with only 12 hours of sunlight in Thailand as an outdoor cannabis grower during the vegetative stage, you can take certain measures to help your plants thrive despite the shorter light cycle. Here are some suggestions:

  • Consider autoflowering strains: Autoflowering cannabis strains are genetically programmed to start flowering automatically after a certain period, regardless of the light cycle. These strains can be beneficial in regions with shorter daylight hours, as they do not rely on specific photoperiods. Consider selecting autoflowering strains for your outdoor grow to accommodate the limited sunlight.


  • Provide optimal nutrition and care: Since your plants will have less time to photosynthesize and grow during the vegetative stage, it becomes crucial to provide them with optimal nutrition. Ensure your plants receive a well-balanced nutrient regimen that includes nitrogen (N), phosphorus (P), and potassium (K) in appropriate ratios. Additionally, pay close attention to watering, temperature, humidity, and pest control to maintain overall plant health.

Step 3: Optimal Soil Selection

The soil you choose will significantly impact the growth and overall health of your cannabis plants. Consider using Grow Ganics Lite soil, which we have great success with it’s a premium organic option that provides essential nutrients and promotes vigorous plant growth. You can purchase it from 🌱🌍πŸͺ΄


Quality cannabis grow soil in Thailand


Step 4: Watering and Drainage Considerations

Water is vital for your cannabis plants, but finding the right balance is key. Assess the local rainfall patterns to determine the watering requirements for your garden. If using tap water, it is recommended to let it sit in an open container for 24 hours to allow the chlorine to evaporate. Adequate drainage is also crucial to prevent waterlogging and root rot. Ensure proper drainage by implementing raised beds or adding extra drainage materials to your soil. πŸ’¦πŸŒΏπŸŒ§οΈ

Step 5: Choosing the Right Fertilizer

Cannabis plants require proper nutrition throughout their growth cycle. Selecting the right fertilizer is essential to provide the necessary nutrients for healthy development. For optimal results, we have had great success with this brand of fertilizer pictured below. You can purchase this fertilizer from 🌱πŸ’ͺ🌿


Quality cannabis fertilizer in Thailand


Step 6: Seed Germination

Starting with high-quality seeds is crucial for a successful outdoor cannabis garden. Our seed partners at Weed Seed Thailand whom we have only used their seeds to grow in Thailand have a nice selection of auto flowers and femininized seeds. Begin the process by initiating seed germination. Place the seeds between layers of moist paper tissue and keep them in a dark, warm location. Monitor the seeds closely, ensuring they remain moist but not saturated, until they sprout. When sprouting has occurred place the seedlings in a small pot with the recommended soil mentioned earlier.  🌱🌱🌱


seed germination in Thailand, growing outdoors


Step 7: Vegetation Stage

During the vegetation stage, your cannabis plants will focus on leafy growth. This stage requires higher levels of nitrogen. πŸ’§πŸ’šProvide the necessary nutrients through fertilization to support healthy foliage development. As a general guideline, water the plants when the top inch of the soil feels dry. Ensure thorough watering to reach the roots but avoid overwatering, which can lead to root rot. In terms of fertilization, cannabis plants in the vegetative stage benefit from higher levels of nitrogen. πŸŒ±βš—οΈ Β  This nutrient promotes lush, leafy growth. Use a balanced organic fertilizer with a higher nitrogen ratio to provide the plants with the necessary nutrients they need for healthy development. Follow the recommended dosage instructions on the fertilizer packaging, adjusting as needed based on the specific requirements of your plants. Regularly monitor the plants’ growth and health to fine-tune the watering and fertilization routine for optimal results. πŸ“Šβœ¨

Pest and Disease Prevention

Regularly inspect your plants for any signs of pests or diseases. Implement preventive measures such as using organic insecticides or beneficial insects to protect your plants from infestations. The Phuket High Team has had much success with Neem oil spray. You can buy the exact same product here


Neem oil for growing cannabis outdoors in Thailand. Deter pests


Here are some pests you might find when growing outdoors in Thailand:

  1. Spider Mites: These tiny pests can cause significant damage to cannabis plants by sucking out sap from leaves, resulting in yellowing, webbing, and stunted growth.
  2. Aphids: Aphids are small, soft-bodied insects that feed on plant sap. They can multiply rapidly and cause leaf curling, distortion, and the secretion of sticky honeydew.
  3. Whiteflies: Whiteflies are small, flying insects that feed on plant sap. They can weaken plants, cause yellowing, and transmit plant viruses.
  4. Caterpillars: Various caterpillar species, such as the tobacco budworm or armyworm, can feed on cannabis leaves and buds, causing significant damage.
  5. Thrips: Thrips are tiny insects that can damage cannabis plants by feeding on leaves, causing silvering, leaf curling, and blackening of buds.
  6. Slugs and Snails: These mollusks can chew on cannabis leaves, leaving behind irregular holes and damage. They are more active during wet and humid conditions.
  7. Fungus Gnats: Fungus gnats are small, flying insects that lay their eggs in moist soil. The larvae feed on plant roots, potentially causing root damage and nutrient deficiencies.


veg weed outdoor thailand growing



When your cannabis plants outgrow their initial containers, it’s time to consider repotting them into larger pots or transferring them to raised beds. πŸͺ΄πŸŒΏπŸžοΈ

🌱 Repotting into Larger Pots: Choose pots that are appropriately sized to accommodate the root system and promote healthy growth, with plenty of holes for drainage. Gently lift the plant from its current container, ensuring minimal disturbance to the roots. Place it in the new pot, filling the surrounding space with fresh, well-draining soil. This allows the roots to expand, access more nutrients, and thrive. 🌱πŸͺ΄πŸŒΏπŸŒ³

πŸ›οΈ Transferring to Raised Beds: If you prefer growing your cannabis plants in raised beds, prepare the bed by loosening the soil and removing any weeds or debris. Create a mixture of high-quality garden soil, compost, and other organic amendments to provide a nutrient-rich environment. Carefully lift the plant from its original container, ensuring the root ball remains intact, and place it in the prepared raised bed. Gently pat the soil around the plant, ensuring it is firmly in place. 🌱🌿🌳🏞️

Repotting or transferring your cannabis plants to larger containers or raised beds allows for better root development, improved nutrient uptake, and increased overall plant health. It provides the plants with more space to grow and access essential resources, ultimately enhancing their outdoor growing experience. πŸͺ΄πŸŒΏπŸŒ³πŸŒž

Step 8: Flowering Stage

The flowering stage is an exciting phase of cannabis cultivation. To induce flowering, switch to a 12-12 light cycle, which means providing 12 hours of light and 12 hours of uninterrupted darkness each day. Monitor the plants closely during the flowering stage, as this is when the buds will start to develop. Keep a close eye on the growth of white hair pistils, which are a sign of female plants. Pay attention to the trichomes, the resin glands responsible for producing cannabinoids and terpenes. As the flowers mature, the trichomes will change color, indicating the optimal time for harvest. 🌸🌿🌼

As your plants enter the flowering stage, they have an increased demand for phosphorus and potassium. Use a balanced flowering nutrient formula specifically designed for cannabis to provide essential nutrients for healthy bud formation.

Pay attention to the temperature and humidity levels in your outdoor growing environment. Cooler temperatures and lower humidity towards the end of the flowering stage can help enhance resin production and overall bud quality.


flowering cannabis outdoor grow thailand


Step 9: Harvesting

Harvesting your cannabis at the right moment is crucial to ensure the desired potency and flavor. Use your senses as a guide. The garden should have a pungent aroma, and the bud sites should be covered in trichomes. To determine the harvest time, observe the trichomes closely. Allow about half of the trichomes to darken to a golden-yellow color, signaling higher cannabinoid levels. For a more sedating experience, wait until about two-thirds of the trichomes have darkened, as THC converts to calming CBN. πŸŒΏπŸŒΌπŸ”Use a magnifying glass or loupe to assess the color and formation of the trichomes. 🌿🌾πŸͺ„ also paying attention to the pistils on your cannabis plants is crucial in determining the optimal time to harvest. Here’s what you need to know about pistils and their significance:

  1. Understanding Pistils: Pistils are the tiny hair-like structures found on female cannabis flowers. They are usually white or light-colored when the plant is in its early stages of flowering.
  2. Pistil Development: As the plant progresses through the flowering stage, the pistils undergo changes. Initially, they appear straight and upright. However, as the plant nears maturity, the pistils start to change shape and color.
  3. Monitoring Pistil Color: The color of the pistils provides valuable information about the plant’s readiness for harvest. Initially, they are white, but over time, they transition to a range of colors, including orange, red, brown, or even purple.
  4. White Pistils: When the pistils are predominantly white, it indicates that the plant is still in its early flowering stage and not yet ready for harvest. At this point, the buds are still developing and have not reached their maximum potency.
  5. Changing Pistil Color: As the flowering stage progresses, the pistils start to change color. The shift from white to a different hue indicates that the plant is maturing, and the buds are nearing their peak potency.
  6. Amber and Darker Pistils: When a significant portion of the pistils has turned amber or darker, it suggests that the plant has reached its peak maturity. This indicates that the buds have developed the highest levels of cannabinoids, providing a more sedating and relaxing experience.
  7. Assessing Pistils along with Trichomes: While pistil color can provide useful information, it’s important to consider it in conjunction with trichome development. Trichomes, the tiny resin glands on the buds, offer a more accurate assessment of cannabinoid maturity.
  8. Harvesting Timing: To achieve the desired effects, it’s best to harvest when the pistils have changed color and the trichomes have reached the desired level of ripeness. This combination ensures the highest potency and the desired balance of cannabinoids.


harvest outdoor cannabis in Thailand


Step10: Drying, Curing, and Storage

Once harvested, it’s time to dry, cure, and store your cannabis for optimal flavor and potency. Hang the trimmed branches upside down in a dark, well-ventilated area with moderate humidity. Maintain a temperature of around 18-21Β°C (65-70Β°F) and ensure good airflow. After about 7-10 days, when the branches snap instead of bending, the buds are dry enough for the curing process. 🌿🌬️


drying cannabis palnt in Thailand


Place the dried buds in glass jars and store them in a cool, dark place. Open the jars daily for the first few days to allow any remaining moisture to escape, and then gradually reduce the frequency to once every few days. The curing process typically takes 2-3 weeks, during which the flavors and aromas develop further.πŸ“¦πŸ•°οΈ

Once fully cured, store your cannabis in airtight containers in a cool, dark place to preserve freshness and quality.

Growing cannabis outdoors in Thailand offers the opportunity to cultivate plants with a full spectrum of cannabinoids and terpenes. By utilizing the natural power of the sun, you can achieve robust and flavorful results. Remember to plan ahead, select the right growing spot, choose quality soil and fertilizer, and pay close attention to the stages of growth. With patience, care, and adherence to this guide, you can enjoy the rewards of your very own bountiful outdoor cannabis garden. Happy growing! 🌿🌞

Disclaimer: The Phuket High team has personally used and vouches for all the products mentioned in this article. We recommend using the provided links to purchase these products, as we earn a small commission that helps support our website. πŸ™

Visit our market place for non THC products