Seeds
Black Muffin F1 Fast Feminised Seeds
SKU: SS-BLMF1-FAST-FEM
Indica-dominant FAST version with very good yields and THC production.
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1
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Flowering Type
Early/fast
Parental lines
Red Hot Cookies x Black Lemon Auto
THC content
Very High THC (25%+)
CBD content
Low CBD (0-1%)
Photoperiod flowering time
6 to 8 weeks
Yield indoor
High Yield (450-600gr/m2)
Plant size
Information not available
Suitable climates
Dry, Hot, Temperate, Warm
From the breederSweet Seeds breeder notes
Indica-dominant FAST version with very good yields and THC production.
Aroma
Fruity
Parental lines
Red Hot CookiesBlack Lemon Auto
Indica-dominant FAST version with very good yields and THC production.
This is an ultra-fast flowering, photoperiod-dependent, feminized strain that develops red flowers. Black Muffin F1 Fast Version® is a first filial generation (F1) cross between a photoperiod-dependent elite clone from our Red Hot Cookies® and the select autoflowering strain Black Lemon Auto.
The strain has a vigorous hybrid character and grows long side branches with thick, compact buds that are soaked with aromatic resin. The buds turn a dark purple color in the flowering stage, emitting a thick, potent, sweet-and-sour aroma with fresh citrus tones of lemons and mandarins, plus a tart undertone of red berries.
Black Muffin F1 Fast Version® has an intense yet balanced, relaxing, and happy effect that stimulates conversation and the imagination.
Brand/breeder
Parental lines
Red Hot Cookies x Black Lemon Auto
Variety
Indica dominant
Flowering type
Early/fast
Sex
Feminised
THC content
Very High THC (25%+)
CBD content
Low CBD (0-1%)
Yield outdoor
High Yield (450-750gr/plant)
Yield indoor
High Yield (450-600gr/m2)
Photoperiod flowering time
6 to 8 weeks
Suitable climates
Dry, Hot, Temperate, Warm
Aroma
Fruity
SKU
SS-BLMF1-FAST-FEM
Early/Fast outdoor timeline
Fast / Early strains keep the photoperiod growth pattern, but they begin flowering earlier and usually finish sooner — helping outdoor growers harvest before late-season weather becomes a problem.
Stage 1
Germination / Early Start
March – April
Wait for: warmer days, lower frost risk, stable spring weather
Watch for: cold snaps, excess moisture, slow early growth
Stage 2
Seedling / Transplant
May
Wait for: steady light, mild conditions, protected early growth
Watch for: transplant stress, pests, wind exposure
Stage 3
Vegetative Growth
June – July
Wait for: long bright days, healthy expansion, strong structure
Watch for: overcrowding, nutrient issues, insect pressure
Stage 4
Flowering
From late July
Wait for: first signs of bloom, good airflow, settled conditions
Watch for: humidity, mould pressure, poor weather
Stage 5
Harvest
From early September
Wait for: ripe trichomes, dense finished flowers, harvest readiness
Watch for: cutting too early, rain, bud rot
Indoor Early/Fast timeline
Fast / Early strains are most valuable outdoors, where earlier flowering and shorter bloom times help growers harvest before poor autumn weather. Indoors, their main benefit is a faster flowering phase than photoperiod versions.
Week 0
Germination
Healthy seedling emergence
Wait for: healthy seedling emergence
Watch for: overwatering, weak starts
Week 1–2
Seedling
Steady early growth
Wait for: steady early growth
Watch for: stretching, stress, excess moisture
Week 3–6+
Vegetative Growth
Desired plant size and strong structure
Wait for: desired plant size and strong structure
Watch for: overcrowding, uneven growth, training stress
6–10 weeks
Flowering Phase
Strong bud formation and steady flower development
Wait for: strong bud formation and steady flower development
Watch for: humidity issues, poor airflow, plant stress
Harvest
Harvest Window
Finished flowers and mature trichomes
Wait for: finished flowers and mature trichomes
Watch for: harvesting too early or pushing plants too long
Based on 3 reviews
Black Muffin F1 Fast Feminised Seeds
Staying in dryer
Was this review helpful?
Black Muffin F1 Fast Feminised Seeds
Really nice seed to begin with. Big beautiful leaves, nice branching. Big plants. Still vegging.
Reply:
Thank you for your review! We really appreciate all those who take time to leave us feedback. We have done a lot of improvements to our website and the way we work. We now have a quicker, better website with products that are easy to find. An excellent, diverse range of the most exciting seeds, combined with what we aim to be, the best service. Our new customer service bot Barbara has just been released and can help all our customers on our website or social media answer any important questions on their order, the ordering process, or any grow questions. Our mission is to ensure our customers have no reason to shop elsewhere. We hope you like the direction we are heading in. Please come back and shop again soon and recommend us far and wide. Thank YOU! Best Seedsman P.S. in the USA we also now have clones available.
Was this review helpful?
Black Muffin F1 FAST Feminised Seeds
Wow Sweet Seeds Fast strains are fantastic. Healthy robust genetics and crazy stretching in flower. Nice
Reply:
Thank you for your review! We really appreciate all those who take time to leave us feedback. We have done a lot of improvements to our website and the way we work. We now have a quicker, better website with products that are easy to find. An excellent, diverse range of the most exciting seeds, combined with what we aim to be, the best service. Our new customer service bot Barbara has just been released and can help all our customers on our website or social media answer any important questions on their order, the ordering process, or any grow questions. Our mission is to ensure our customers have no reason to shop elsewhere. We hope you like the direction we are heading in. Please come back and shop again soon and recommend us far and wide. Thank YOU! Best Seedsman P.S. in the USA we also now have clones available.
Was this review helpful?
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