Old Jack
Also known as: Jack's Old, Old Jack Herer
Old Jack Strain Overview
Old Jack is a cannabis strain that represents a stabilized phenotype selection from the broader Jack Herer family, though its exact genetic origins are somewhat debated among cannabis historians. The strain is believed to have emerged in the late 1990s or early 2000s as breeders worked to preserve and refine the classic Jack Herer genetics, which were originally developed by Sensi Seeds. Unlike some modern hybrids that emphasize extreme THC levels, Old Jack maintains a more balanced cannabinoid profile that reflects earlier cannabis breeding priorities.
The strain produces medium-sized, conical buds with a distinctive appearance characterized by bright orange pistils weaving through forest green calyxes. A generous coating of trichomes gives the flowers a frosty, crystalline appearance. The buds are typically dense but not overly compact, with a structure that facilitates proper air circulation during cultivation. Old Jack's foliage often displays subtle purple hues in cooler temperatures, particularly during the final weeks of flowering.
Notable features include its complex aromatic profile and consistent effects across different phenotypes. While many modern strains show significant variation between plants, Old Jack has been selectively bred for stability, making it a reliable choice for both growers and consumers seeking predictable results. The strain has maintained a dedicated following among connoisseurs who appreciate classic cannabis genetics, though it has become somewhat less common in commercial markets dominated by newer, higher-THC varieties.
Old Jack Strain Effects
Old Jack Strain Positive Effects
- Users report relief from stress and anxiety
- May help with fatigue and low mood
- Often used for mild pain management
- Some report assistance with focus and concentration
This is not medical advice. Consult a healthcare professional.
Old Jack Strain Possible Negative Effects
Old Jack Strain Growing Information
Old Jack is considered a moderate-difficulty strain to cultivate, suitable for growers with some experience. The plants typically flower in 9-11 weeks indoors, with outdoor harvests occurring in mid to late October in northern hemisphere climates. Indoor yields are moderate to high, averaging 400-500 grams per square meter under optimal conditions, while outdoor plants can produce 500-700 grams per plant.
The strain adapts well to both indoor and outdoor cultivation, though it thrives in controlled indoor environments where temperature and humidity can be carefully managed. Plants exhibit a sativa-dominant growth pattern with moderate stretching during the flowering phase, reaching heights of 120-180 cm indoors and up to 200-250 cm outdoors. Old Jack responds well to training techniques like topping and low-stress training (LST) to manage height and improve light penetration.
Special considerations include maintaining good air circulation to prevent mold, as the dense buds can be susceptible in humid conditions. The plants prefer a consistent nutrient regimen without excessive nitrogen during flowering. Some phenotypes may benefit from slightly cooler temperatures during the final weeks to enhance coloration and terpene development. Old Jack is generally resistant to common pests and diseases, making it a relatively robust choice for organic cultivation methods.
Old Jack Strain Genetics
Old Jack Strain Parent Strains
Frequently Asked Questions
How does Old Jack make you feel?
Old Jack is known to produce the following effects:
- Euphoric: 85%
- Creative: 75%
- Focused: 70%
- Energetic: 65%
What are the positive effects of Old Jack?
Old Jack has these reported positive effects:
- Users report relief from stress and anxiety
- May help with fatigue and low mood
- Often used for mild pain management
- Some report assistance with focus and concentration
This is not medical advice. Consult a healthcare professional.
What are the negative effects of Old Jack?
Possible negative effects include:
- Dry Mouth
- Dry Eyes
- Anxiety
- Dry mouth
- Dry eyes
- Possible anxiety or paranoia in sensitive users or high doses
- Occasional dizziness in novice users
What does Old Jack taste like?
Old Jack has the following flavor profile:
- Citrus
- Earthy
- Pine
- Spicy
- Woody