Extreme Impact Auto – Heavyweight Seeds (Autoflowering Feminised)


A compact, ultra-potent autoflower delivering crushing body relaxation, hash-citrus flavour, and rapid harvests.


Introduction:

Extreme Impact Auto by Heavyweight Seeds is a compact yet incredibly powerful autoflowering strain built for growers and smokers who demand deep relaxation and a hard-hitting high. With exceptional ease of cultivation, strong resistance to mould and pests, and a rich flavour profile blending classic hash with sharp citrus, this strain delivers knockout results in record time.


Strain Information:

Strain Name: Extreme Impact Auto

Breeder: Heavyweight Seeds

Lineage: Mazar Auto x Fast & Vast Auto

Genetics: 90% Indica / 10% Sativa

Seed Type: Autoflowering Feminised

Flowering Type: Autoflowering

Flowering Time: 8 weeks from germination (indoors and outdoors)

Effect: Intensely powerful, long-lasting body stone with a strong cerebral element

Aroma: Pungent and penetrating with earthy hash tones

Taste: Deep hash with sharp lemon and lime undertones

Height: 70–80 cm

Yield: Indoors: up to 650 g/m² / Outdoors: 50–150 g per plant

THC Content: 21%

CBD Content: 0.6%


Strain Description:

Extreme Impact Auto is not for the faint-hearted. With a massive 21% THC and 0.6% CBD, it delivers a deeply sedating, full-body stone that lasts for hours. This heavily indica-dominant strain is ideal for evening and night-time use, offering powerful physical relaxation alongside a calming cerebral effect. Its compact structure and robust genetics make it suitable for growers of all skill levels, delivering elite potency from a small, discreet plant.


Growing Information:

This autoflower is remarkably easy to grow and performs well across a wide range of environments, including soil, hydro, indoor, greenhouse, and outdoor setups. Reaching just 70–80 cm in height, it remains compact while still producing impressive yields of up to 650 g/m² indoors and up to 150 g per plant outdoors. It is highly resistant to pests and mould and completes its full life cycle in just 8 weeks from germination, making it perfect for multiple harvests per season.


Flavour and Aromas:

Extreme Impact Auto delivers a bold, earthy base dominated by classic hash flavours, followed by sharp citrus zest from lemon and lime notes. Its aroma is intense and pungent, filling grow spaces quickly and requiring adequate ventilation. The flavour is deep, rich, and long-lasting, making it a favourite among lovers of traditional hash profiles with a modern citrus twist.


Strain Lineage:

Extreme Impact Auto is bred from Mazar Auto and Fast & Vast Auto. Mazar Auto contributes heavy resin production and powerful indica effects, while Fast & Vast Auto adds explosive growth speed and impressive yield potential. Together, they create a fast-flowering, compact plant with exceptional strength and performance.


Effects:

The effects arrive fast and hit hard, delivering an intensely relaxing body stone paired with a strong, calming cerebral sensation. The high is long-lasting and deeply sedative, making it ideal for stress relief, pain management, insomnia, and full-body relaxation. Best suited for evening or night-time use.


Strain Summary:

Extreme Impact Auto is a fast, compact, and devastatingly powerful autoflower that delivers on every level — potency, flavour, yield, and ease of growth. Perfect for medicinal users and indica lovers seeking serious strength, this strain offers elite results in just 8 weeks from seed. Once grown, its name will make perfect sense.


Disclaimer:
All seeds sold at Breeders Collective are strictly intended as souvenirs and for preservation purposes. We do not condone or encourage illegal activity. Please ensure you understand and comply with your local laws regarding cannabis seeds and cultivation.