Forbidden Fruit Cake
Cannabis seeds
by Advanced Seeds
Forbidden Fruit Cake Feminized Seeds by Advanced Seeds
Forbidden Fruit Cake is a feminized cannabis seed from Advanced Seeds that crosses Wedding Cake with Forbidden Fruit to produce an indica-dominant hybrid reaching up to 26% THC. The result is a compact, purple-hued plant with serious resin production and a flowering time of just 45–55 days indoors. If you want a visually striking grow with heavy yields and a complex flavour profile, this one delivers on all fronts.
Why Forbidden Fruit Cake Seeds Stand Out
Advanced Seeds built Forbidden Fruit Cake by crossing two heavy hitters: Wedding Cake and Forbidden Fruit. Wedding Cake brings the potency and dense bud structure. Forbidden Fruit contributes those deep purple colours and the fruity terpene profile that makes your drying room smell like a tropical market. The combination produces a strain that hits 26% THC — that's not a ceiling number pulled from thin air, it's the genetic potential these parents pass down.
What we'd actually highlight first, though, is how this plant looks during late flower. The purple hues aren't subtle — your canopy turns into something genuinely impressive among all the green. The buds pack on resin like they're competing for a trophy, and the compact structure means you're not fighting with lanky branches. She stays between 70–90 cm indoors, which is a real advantage if you're working in a tent rather than a warehouse.
The honest limitation? That compact indoor height means you need to manage your light distance carefully. A plant this short and dense can develop humidity issues deep in the canopy if airflow isn't dialled in. A small oscillating fan pointed at the lower canopy solves this, but it's worth mentioning because we've seen growers lose buds to mould on exactly this type of squat, dense indica.
Forbidden Fruit Cake Growing Specifications
| Specification | Detail |
|---|---|
| Seed bank | Advanced Seeds |
| Genetics | Wedding Cake x Forbidden Fruit |
| Type | Feminized photoperiod |
| Dominance | Indica-dominant hybrid |
| THC content | Up to 26% |
| Indoor flowering time | 45–55 days |
| Indoor height | 70–90 cm |
| Indoor yield | 500–550 g/m² |
| Outdoor height | 240–280 cm |
| Outdoor harvest | Early October |
| Seeds per pack | 3 |
Indoor vs Outdoor: Choosing Your Forbidden Fruit Cake Setup
Forbidden Fruit Cake performs well in both environments, but the plant you get is dramatically different depending on where you grow it. Indoors, expect a bush that tops out at 70–90 cm — manageable in an 80x80 or 100x100 tent. The 45–55 day flowering period is genuinely fast for a strain pushing 26% THC. Most comparable indica hybrids need 8–9 weeks minimum, so you're saving real time per cycle. Indoor yield sits at 500–550 g/m², which is strong for a plant this size. SOG and SCROG both work well given the compact stature.
Outdoors is a different story entirely. This plant stretches to 240–280 cm — nearly three metres — and fills out accordingly. If you've got the space and the climate, outdoor Forbidden Fruit Cake is a sight. Harvest falls in early October, so you'll want to keep an eye on autumn rains in northern Europe. Dense indica buds and late-season moisture are not friends. Compared to something like Royal Gorilla, which runs a similar THC percentage but tends toward a more open bud structure, Forbidden Fruit Cake's density means you need to be more vigilant about bud rot outdoors.
Complete your grow setup with a carbon filter and extraction fan — the sweet, fruity terpenes on this strain become very noticeable in late flower, and your neighbours don't need to know about your hobby. A jeweller's loupe or pocket microscope is also worth grabbing to time your harvest by trichome colour rather than guessing.
Flavour and Aroma Profile of Forbidden Fruit Cake
The terpene profile on Forbidden Fruit Cake is where this strain really earns its name. During late flowering, the grow room fills with a sweet, spicy aroma that's hard to ignore — and hard to contain without proper carbon filtration. Once you've dried and cured the buds properly (we'd say a minimum of two weeks cure, three is better), the flavour opens up into layers of berry and tropical fruit with a Kush backbone underneath.
Think of it as dessert-strain territory: sweet enough to make you reach for another hit, but with enough earthy depth that it doesn't taste artificial. The Wedding Cake parent contributes that slightly doughy, vanilla-adjacent sweetness, while Forbidden Fruit pushes the berry and citrus notes forward. The combination is rich and complex — not a one-note fruit strain by any stretch. If you've grown Cherry Pie or Gelato and enjoyed those flavour profiles, Forbidden Fruit Cake sits in the same neighbourhood but with more tropical punch.
Effects and Potency: What to Expect from 26% THC
Forbidden Fruit Cake's indica dominance shows clearly in the effects. The high is potent and long-lasting, leaning heavily toward physical relaxation. At up to 26% THC, this isn't a strain for casual afternoon use unless your afternoon plans involve the sofa and a film. The onset carries some initial mental clarity — a nod to the Wedding Cake genetics — before the indica body effect settles in properly.
For context, 26% THC puts Forbidden Fruit Cake in the upper tier of potency. That's comparable to strains like Gorilla Glue or Wedding Cake itself. If you're growing for personal use and you know your tolerance, this is a satisfying evening strain. If you're newer to high-THC varieties, approach with respect — a little goes a long way.
How to Grow Forbidden Fruit Cake Seeds
- Germinate your Forbidden Fruit Cake feminized seeds using the paper towel method or directly in a starter plug. Keep temperatures between 22–26°C and expect taproots within 24–72 hours.
- Transplant seedlings into their final containers once the first true leaves appear. For indoor grows, 11-litre pots work well given the compact 70–90 cm final height.
- Maintain 18/6 light during vegetative growth. These plants respond well to low-stress training (LST) to open up the canopy and expose lower bud sites to light — critical with such a dense, bushy structure.
- Switch to 12/12 light to trigger flowering. The 45–55 day flowering window means you can start counting from the first visible pistils.
- Monitor humidity closely during weeks 4–7 of flower. Keep relative humidity below 50% — ideally around 40–45% — to prevent mould in those dense, resinous buds. Good airflow through the canopy is non-negotiable.
- Watch for the purple colouring to develop during late flower. Slightly cooler night temperatures (around 18–20°C) can enhance the purple pigmentation without stressing the plant.
- Harvest when trichomes show mostly milky-white with 10–20% amber under magnification. Dry in a dark room at 18–20°C and 55–60% humidity for 7–10 days, then cure in glass jars for a minimum of two weeks.
Forbidden Fruit Cake vs Wedding Cake: How They Compare
| Trait | Forbidden Fruit Cake | Wedding Cake |
|---|---|---|
| Genetics | Wedding Cake x Forbidden Fruit | Girl Scout Cookies x Cherry Pie |
| THC | Up to 26% | Up to 25% |
| Indoor flowering | 45–55 days | 55–65 days |
| Indoor height | 70–90 cm | 80–120 cm |
| Indoor yield | 500–550 g/m² | 450–500 g/m² |
| Flavour | Berry, tropical, Kush | Vanilla, dough, earthy |
| Standout feature | Purple colours, faster flowering | Proven genetics, wider availability |
Forbidden Fruit Cake edges out its parent Wedding Cake on flowering speed and yield. The 45–55 day window is noticeably faster, and the 500–550 g/m² indoor yield is a step up. Where Wedding Cake wins is in name recognition and the sheer volume of grow diaries available online — if you want a well-documented grow, Wedding Cake has more community data behind it. Forbidden Fruit Cake is the better pick if you want the extra flavour complexity and those purple aesthetics without sacrificing potency.
Frequently Asked Questions
How long does Forbidden Fruit Cake take to flower indoors?
Forbidden Fruit Cake has an indoor flowering time of 45–55 days, which is fast for an indica-dominant strain pushing 26% THC. Most growers see full maturity closer to the 50-day mark under optimal conditions.
What yield can I expect from Forbidden Fruit Cake seeds?
Indoors, expect 500–550 g/m² with proper lighting and training. Outdoors, yields increase significantly thanks to the plant's ability to reach 240–280 cm. The compact indoor structure responds well to SOG and SCROG techniques.
Does Forbidden Fruit Cake actually turn purple?
Yes — the purple colouring comes from the Forbidden Fruit parent and develops naturally during late flower. Cooler night temperatures around 18–20°C can enhance the pigmentation, but the genetics do most of the work. Not every phenotype will turn equally purple, but most show strong colour.
Is Forbidden Fruit Cake suitable for small grow tents?
At 70–90 cm indoors, Forbidden Fruit Cake fits comfortably in a 60x60 or 80x80 tent. The compact size is one of its strengths. Just make sure airflow reaches the lower canopy — dense, short plants can trap humidity between branches.
What does Forbidden Fruit Cake taste like?
Sweet berry and tropical fruit dominate, with an earthy Kush undertone from the Wedding Cake genetics. After a proper two-to-three-week cure, the flavour becomes richer and more layered. It sits in the dessert-strain category but with genuine complexity.
How does Forbidden Fruit Cake compare to Forbidden Fruit?
Forbidden Fruit Cake adds Wedding Cake's potency and structure to Forbidden Fruit's colour and flavour. The result is higher THC (up to 26% vs typically 21–23%), denser buds, and a faster flowering time. The fruity terpene profile is retained but gains a sweet, doughy layer.
When should I harvest Forbidden Fruit Cake outdoors?
Outdoor harvest falls in early October. Watch trichome development closely with a loupe — the dense bud structure means you want to harvest before autumn rains set in to avoid mould. Plants reach 240–280 cm outdoors, so plan your space accordingly.
Last updated: April 2026
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Medical disclaimer. This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before use of any substance.