Guava Runtz Auto - Outdoor Diary 2026
Start at 6 Week
G
Germination2mo ago
RooftopFarmer Guava Runtz Auto - Fast Buds Outdoor 2026
Genetics:
Guava Auto RF3 (FastBuds) × Mango Runtz (Mephisto Genetics)
This cross is straight fire — tropical guava sweetness meets that sugary Runtz candy vibe. I’m expecting some absolute terp bombs.
Week 1 Summary:
Day 1: Dropped one seed straight into a 15L fabric pot filled with BioBizz All-Mix. No pre-soak, just 1 cm deep, straight from the packet.
By Day 5 the seedling had already smashed through the soil like it was on a mission. Popped up strong, healthy, and confident. She even kicked off her seed shell all by herself. First few days she chilled on a bright windowsill, started gradual hardening with direct sunlight sessions.
Weather has been perfect, bright sunny days with just enough clouds. Nights are still a bit fresh though, so I put her back inside.
The Guava Runtz journey has officially begun and it’s looking great already! Stay tuned for Week 2. 😊
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Used method
Directly In Substrate
Germination Method
1
Week 1. Vegetation1mo ago
2 cm
Height
12 hrs
Light Schedule
20 °C
Day Air Temp
6.5
pH
No Smell
Smell
15 l
Pot Size
RooftopFarmer Guava Runtz - Week 2 (Fast Buds Outdoor 2026)
Started outdoor sun exposure on day 7 and slowly increased the hours. Weather was ideal: mostly sunny, occasionally cloudy. Nights are still chilly, so everything comes back inside before dark.
Only small issue: one leaf tip shows a tiny bit of burn (probably from the strong sun transition). Otherwise healthy and growing well. :)
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2
Week 2. Vegetation1mo ago
5 cm
Height
12 hrs
Light Schedule
24 °C
Day Air Temp
6.5
pH
No Smell
Smell
15 l
Pot Size
RooftopFarmer Guava Runtz – Week 3 (Fast Buds Outdoor 2026) ☀️
We had amazing weather all week, which meant she could stay outside from morning till evening. There was some stronger wind the last couple of days, so I topped up the soil around her stem to give her better support. She’s sitting nicely at around 5 cm now and has this vibrant, rich green foliage that looks really healthy.
Super happy with her progress so far. :)
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3
Week 3. Vegetation1mo ago
7 cm
Height
16 hrs
Light Schedule
27 °C
Day Air Temp
6.5
pH
No Smell
Smell
15 l
Pot Size
Nutrients 2
Fish-Mix
1 mll
Calmag
0.3 mll
RooftopFarmer Guava Runtz – Week 4 (Fast Buds Outdoor 2026)
Perfect weather continues, so Guava Runtz is now fully outside 24/7 and soaking up every bit of sunshine she can get. She’s clearly thriving in the natural environment.
I stabilized her with some simple sticks for now (still searching for a better support method). She’s reached about 7 cm and has that rich, healthy green foliage I love to see.
This week I gave her a gentle dose of BioBizz Fish-Mix and BioBizz Calmag. After dealing with calcium/magnesium problems last grow, I’m preventing it early this season.
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4
Week 4. Vegetation21d ago
15 cm
Height
16 hrs
Light Schedule
28 °C
Day Air Temp
6.5
pH
No Smell
Smell
15 l
Pot Size
Nutrients 2
Fish-Mix
1 mll
Calmag
0.3 mll
RooftopFarmer Guava Runtz – Week 5 (Fast Buds Outdoor 2026)
The weather has been perfect again this week. Guava Runtz is getting massive amounts of sunlight and is being fed on a regular schedule. She’s loving the outdoor life.
I switched to better support sticks to properly stabilize her, and it’s already making a difference. She has shot up to over 15 cm tall and displays that rich, healthy green foliage I like to see.
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5
Week 5. Vegetation15d ago
22 cm
Height
16 hrs
Light Schedule
28 °C
Day Air Temp
6.5
pH
No Smell
Smell
15 l
Pot Size
Nutrients 2
Fish-Mix
1 mll
Calmag
0.3 mll
RooftopFarmer Guava Runtz – Week 6 (Fast Buds Outdoor 2026)
The weather remained good. Guava Runtz is getting a lot of sunshine and consistent nutrients.
She has stayed compact and is now around 22 cm tall. The plant has a healthy green color and solid structure.
Steady growth so far.
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6
Week 6. Flowering8d ago
37 cm
Height
16 hrs
Light Schedule
29 °C
Day Air Temp
6.5
pH
Weak
Smell
15 l
Pot Size
Nutrients 4
Fish-Mix
1 mll
Calmag
0.3 mll
Bio-Bloom
1 mll
RooftopFarmer Guava Runtz – Week 7 (Fast Buds Outdoor 2026)
The weather has been excellent. Guava Runtz continues to enjoy lots of sun and consistent nutrients.
She has reached around 37 cm and is growing visibly bushier. You can clearly see her entering the flowering stage now. She has a nice sturdy structure and healthy green color. Really happy with how she is developing.
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