Understanding the differences between cannabis subspecies helps with variety selection. Effect, growth and cultivation characteristics explained.
Understanding cannabis genetics helps you choose the best strain for every purpose:
**Cannabis Sativa**
Originally from equatorial regions (Thailand, Colombia, Mexico).
*Growth characteristics:*
- Tall, slender plants (2-4+ metres)
- Long, thin leaves with 7-13 fingers
- Longer flowering time (10-16 weeks)
- Open, airy flower structure
- More stretch in the flower
*Effect:*
- Energetic, creative, euphoric
- Head high
- Less sedating
- Ideal for daytime use
- Higher THC:CBD ratio often
*Cultivation:*
- Needs a lot of space vertically
- Training necessary indoors
- Tolerates higher temperatures
- Longer vegetation period necessary
**Cannabis Indica**
Originally from mountainous regions (Afghanistan, Pakistan, India).
*Growth characteristics:*
- Compact, bushy plants (1-2 metres)
- Broad, short leaves with 5-9 fingers
- Shorter flowering time (6-9 weeks)
- Dense, compact flowers
- Less stretch, more side shoots
*Effect:*
- Relaxing, calming, physical
- Body-heavy ("body high")
- Sedative, sleep-inducing
- Ideal for evenings
- Often balanced THC:CBD ratio
*Cultivation:*
- Ideal for indoor cultivation
- Less training required
- Prefers cooler temperatures
- Faster harvest possible
**Cannabis Ruderalis**
From cold regions (Siberia, Eastern Europe).
*Characteristics:*
- Very small plants (30-80cm)
- Autoflowering genetics
- Low THC content naturally
- Extremely robust and cold tolerant
- Flowers regardless of light hours
*Use:*
- Base for autoflower hybrids
- Rarely grown pure
- Brings robustness to crosses
- Enables automatic flowering
**Modern hybrids**
Today, almost all varieties are hybrids of the three subspecies.
*Hybrid types:*
- Sativa-dominant: 60-90% sativa genetics
- Indica-dominant: 60-90% indica genetics
- Balanced: 40-60% of both
- Autoflower: With ruderalis genetics
*Variety selection tips:*
- Indoor, little space → Indica-dominant
- Outdoor, lots of space → Sativa-dominant
- Beginners → Autoflower hybrids
- Fast harvest → Indica or autoflower
- Maximum potency → Modern sativa hybrids
**Known example strains:**
- Classic Sativa: Amnesia Haze, Jack Herer
- Classic Indica: Northern Lights, Afghan Kush
- Balanced hybrids: Blue Dream, Girl Scout Cookies
- Autoflower: White Widow Auto, AK-47 Auto
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