Guava Runtz Auto - Outdoor Diary 2026
Start at 4 Week
G
Germination1mo 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. Vegetation23d 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. Vegetation16d 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. Vegetation9d 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. Vegetation18h 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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