UltraSour Feminized Seeds

UltraSour from TH Seeds is a feminized option designed for growers who want a straightforward, photoperiod strain for indoor or outdoor setups. These Seeds offer a consistent way to explore this variety in a controlled environment.

This strain is suited to growers who value predictable growth patterns and a clear development cycle. UltraSour can fit into a range of cultivation styles, from simple soil grows to more advanced systems.

Feminized seeds intended for growers seeking a regular light-cycle strain
Suitable for both indoor tents and outdoor gardens, depending on climate
Adaptable to different growing media and nutrient programs
Allows growers to focus on training and plant care without managing mixed seed types
Provides a consistent starting point for those exploring this strain more than once

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About UltraSour

UltraSour from TH Seeds is a hybrid created by crossing MK-Ultra with Sour Diesel. These feminized seeds are intended for growers who want a strain with well-known parent lines and a straightforward garden setup.

With its MK-Ultra and Sour Diesel background, UltraSour typically shows traits associated with both indica and sativa varieties. Growers often choose these seeds when they are looking for a plant that reflects classic, established genetics rather than experimental crosses.

Key details

Strain name: UltraSour
Breeder: TH Seeds
Genetics: MK-Ultra crossed with Sour Diesel
Seed type: photoperiod, feminized
Suitable for indoor and outdoor cultivation, depending on local conditions

Growing notes

Flowering time is not specified by the breeder here, so growers typically monitor trichomes and overall plant maturity to decide on harvest.
UltraSour plants often respond well to basic training methods such as topping or low-stress training to help manage height and improve light exposure.
As with many hybrids, maintaining stable temperatures, adequate airflow, and consistent nutrition supports healthy development from these seeds.
Growers may wish to support branches during late bloom, as hybrid plants can sometimes develop heavier flower sites.

What to expect

UltraSour combines the lineage of MK-Ultra and Sour Diesel, so growers can generally expect a hybrid structure with a mix of broad and narrower leaf shapes. Aroma, flavor, and effects are not specified here, but are typically influenced by both parent strains. Because exact yield and flowering time details are not provided, UltraSour is often approached by growers who are comfortable observing plant signals and adjusting their schedule rather than relying on fixed numbers.

FAQ

Q: What kind of grower is UltraSour suitable for?
A: UltraSour is generally suited to growers who have some experience with photoperiod hybrids and are comfortable adjusting feeding, training, and harvest timing based on how the plants develop.
Q: Can I grow UltraSour seeds indoors?
A: Yes, UltraSour can be grown indoors, where you can control light cycles, temperature, and humidity to support consistent growth.
Q: Is UltraSour a high-yield strain?
A: Specific yield data is not provided, so UltraSour is typically treated as a hybrid with variable production that depends on factors like environment, plant size, and grower technique.
Q: What do UltraSour plants smell and taste like?
A: Detailed flavor and aroma descriptions are not listed here, but they are usually influenced by the MK-Ultra and Sour Diesel lineage, which many growers associate with distinctive, noticeable profiles.
Q: Are UltraSour seeds suitable for outdoor gardens?
A: These seeds can be used outdoors in regions where the climate supports the full growing season, provided plants are protected from excessive moisture, pests, and early cold weather.

Indoor	Yes
Outdoor	Yes
Cannabis Genetics	MK-Ultra crossed with Sour Diesel
Flowering Time	9 weeks
THC	Strong
Medical	Yes
Height Info	Tall
Height notes	from 55 to 59 inches
Flavour	Extremely tart
Yield	Good
Yield Notes	450 to 500 grams per square meter
Mainly Indica	Yes
Sativa / Indica ratio	30% of Sativa and 70% of Indica
Sativa / Indica Type	Hybrid
Greenhouse	Yes

🌱 TH Seeds – Trusted Cannabis Genetics

TH Seeds is a respected seed bank known for producing high-quality cannabis seeds with a focus on potency, flavor, and reliability. Whether you're looking for feminized, autoflowering, or CBD-rich strains, TH Seeds offers a well-rounded catalog that meets the needs of beginners and expert growers alike.

With a commitment to genetic stability and grower satisfaction, TH Seeds ensures consistent germination, resilient plants, and impressive yields across various environments.

🚀 Why Choose TH Seeds?

🌎 Diverse and stable cannabis genetics
🌿 Great for indoor and outdoor grows
🏆 Reputation for quality and performance
✅ Excellent germination rates
🔑 Trusted by growers worldwide

If you value genetic excellence, fast flowering, and potent results, TH Seeds is a brand you can trust for your next grow.

🌱 Growing Cannabis Seeds – Common Questions

💧 How do I soak cannabis seeds before planting?

Place the seeds in a glass of cold tap water or rainwater and keep the glass in a dark place. Wait between 2 and 10 days until the seeds begin to sprout.

🌿 How deep should I plant germinated seeds?

Plant sprouted seeds about 0.5 cm deep in light, moist soil with the root pointing down. Handle gently to avoid damaging the sprout.

💧 How moist should the soil be for seedlings?

Keep the soil evenly moist but never soaked. Overwatering can drown young seedlings. A small propagator helps maintain humidity.

⚠️ What are common mistakes when growing cannabis seeds?

❌ Soil that’s too wet – the seedling may rot.
❌ Planting too deep – the seedling may not reach the surface.
Always ensure good drainage and shallow planting.

🌱 Do I need special soil or pots for growing?

Use seed-raising or herb soil and pots with drainage holes so excess water can escape. This prevents root rot and promotes healthy growth.

⚠️ Legal Disclaimer (United States)

Note: Cannabis laws vary by state in the United States. Read the full details below.

View full legal disclaimer

📝 Disclaimer: The information provided on this website is for educational and informational purposes only. Cannabis laws vary by state and federal jurisdiction in the United States, and it is your responsibility to understand and comply with the laws applicable in your location.

Under United States federal law, cannabis remains classified as a controlled substance. However, many states have enacted their own laws permitting medical or recreational cannabis use under specific conditions. Leo Seeds does not promote, encourage, or endorse any illegal activity.

By accessing this website, you confirm that you are at least 21 years of age (or the minimum legal age required in your state) and that any products or information obtained from this site will be used in compliance with all applicable laws.

📌 Important Legal Notes:

Federal law (United States): Cannabis cultivation and distribution remain illegal at the federal level, regardless of state-level legalization.
State laws: Cannabis laws differ significantly between states, including rules on possession, cultivation, and use.
Cannabis seeds: Seeds may be sold as collectible or souvenir items in certain jurisdictions; germination and cultivation may be restricted or prohibited depending on state law.
Medical programs: Some states permit cannabis cultivation only for licensed medical patients or registered caregivers.

This legal notice is provided to promote transparency, inform visitors of U.S. cannabis laws, and reduce legal risk.