
- A tropical, resinous hybrid built for flavour and stability
Guava Runtz
Guava Runtz is an indica-dominant hybrid with tropical flavours and balanced, relaxing effects.
- Tropical guava aroma with candy-sweet undertones
- Dense, resinous buds with steady yields
- Well-suited to training and medium-height grows
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18-22% |
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0.1-0.5% |
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Guava x Runtz |
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Indica-dominant hybrid |
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Intermediate |
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8-9 weeks |
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Medium, bushy |
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Medium to high |
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Tropical guava, Sweet candy, Creamy diesel |
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Feminised |
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Humid greenhouse environments, temperate |
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Relaxed, Euphoric, Uplifted |
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Best in controlled indoor or greenhouse environments; outdoor possible in sheltered temperate spots |
About Guava Runtz
Guava Runtz is a fruit-forward indica-dominant hybrid bred from Guava x Runtz that produces dense, resinous buds and a complex terpene profile. It offers a clear uplift that eases into a soothing body relaxation and performs best under controlled environmental conditions, particularly in greenhouses with good humidity management.
Guava Runtz is an indica-dominant hybrid with dense, resinous buds and a compact structure. The cultivar leans towards a calming body effect while retaining a clear mental uplift.
THC levels commonly sit between 18% and 22%, providing noticeable potency without overwhelming most experienced users. Variability between phenotypes means testers should dose conservatively at first.
CBD is low in this strain, typically under one per cent, so it is not chosen for CBD-specific therapy. Patients seeking high-CBD relief should select alternative genetics.
Guava Runtz is produced from a cross between a tropical Guava phenotype and the dessert-forward Runtz. The result balances fruity terpenes with a dense, resinous bud structure.
Seeds are most commonly sold as feminised to maximise female plants for flower production. Some breeders also offer regular and autoflower variants from selected crossings.
Growing Guava Runtz in humid greenhouse environments requires vigilant air circulation and mould prevention to protect the dense buds. Intermediate growers will benefit from regular pruning and precise humidity control.
Flowering usually completes in eight to nine weeks when plants are healthy and well-fed. Extended outdoor seasons can push finishing slightly later in some phenotypes.
When provided with steady nutrients and strong light Guava Runtz delivers medium to high yields. Growers in the Scottish Highlands who use greenhouses generally see better output than fully outdoor plants.
Plants tend to remain medium in height with a bushy, branchy habit suitable for training. They respond well to topping, LST and Scrog systems to maximise bud sites.
Guava Runtz performs very well indoors under controlled light cycles and stable environmental conditions. In the Scottish Highlands outdoor cultivation is possible in sheltered microclimates but a greenhouse in the Scottish Highlands offers the most consistent results.
In the Scottish Highlands Guava Runtz performs best inside humid greenhouse environments where growers can control moisture and airflow. Effective ventilation, dehumidification and routine bud inspections are essential to prevent mould and rot.
The initial effect is a clear cerebral uplift and mood boost that eases into a relaxed body sensation. It does not usually produce heavy sedation at moderate doses.
The flavour profile mixes ripe guava sweetness with candy-like notes and a creamy diesel finish. Smoke is smooth with a lingering sugary aftertaste.
Frequently Asked Questions
Common questions about this strain, covering growth, effects, and suitability for UK conditions.
Yes, Guava Runtz can be grown successfully in small indoor cannabis grow spaces provided you control height through topping and low-stress training and maintain good ventilation.
Keep relative humidity around 40-50% during flowering to reduce mould risk while preserving terpene profile.
Increase phosphorus and potassium during early bloom and monitor plants; feed on a light schedule while watching for nutrient burn.
Dense buds and humid conditions make it susceptible to bud rot and mildew, so routine inspections and preventative measures are important.
Topping, LST and Scrog are effective to open the canopy and improve light penetration for this bushy strain.
Harvest when trichomes are mostly cloudy with some ambers for balanced effects, and check multiple buds across the plant for consistency.
Dry slowly at 18-22°C and 45-55% humidity, then cure in airtight jars for several weeks with occasional burping to develop flavour.
Some breeders have produced autoflower variants by crossing with ruderalis lines, which can shorten the grow cycle significantly.
CO2 can boost yields under intense lighting and sealed rooms, but is unnecessary for small-scale or ventilated grow tents.
Beginners can grow it with careful attention to humidity and pest prevention, but intermediate skills improve consistency and yield.
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