Lemon Pie

Lemon Pie Auto Cannabis Seeds by FastBuds

Lemon Pie Auto is an autoflowering feminised cannabis seed from FastBuds that crosses the original Lemon Pie with ruderalis genetics for a fast, compact, and seriously citrus-forward grow. She's indica-dominant, stays under 100cm, and moves from seed to harvest in just 8–9 weeks. If you want chunky, resinous buds dripping with lemon and fuel aromas without babysitting your plants for months, this is the one to grab.

Why Lemon Pie Auto Seeds Deserve a Spot in Your Grow

FastBuds built Lemon Pie Auto for growers who want maximum flavour with minimum fuss. The ruderalis backbone means she flips to flower on her own schedule — no light cycle changes, no timer drama. She tops out around 100cm, which makes her a natural fit for tents, balconies, and any space where vertical room is tight. But don't let the compact stature fool you: indoor yields hit 450–550g/m², which is genuinely impressive for an auto of this size.

The real draw, though, is what happens after harvest. Crack open a cured jar and you get hit with this sharp, electric lemon scent layered over a dank fuel base. It's not subtle — it fills a room. The smoke carries that citrus punch through every hit, with skunky sweetness and a pine finish that rounds out the profile. We'd describe it as lemon zest meets petrol station meets a walk through a pine forest. In a good way.

One honest note: like most autos, she doesn't respond well to heavy stress training or topping. FastBuds specifically recommend LST (low-stress training) to open up the canopy and boost light penetration. If you're the type who likes to top and supercrop aggressively, a photoperiod Lemon Pie might suit you better. But if you want speed and simplicity, the auto version delivers.

Lemon Pie Auto Grow Specifications

Terpene Profile and Flavour of Lemon Pie Auto

The terpene profile on Lemon Pie Auto is what sets her apart from the dozen other lemon-named strains on the market. The dominant note is a sharp, almost electric citrus — proper lemon zest, not the artificial lemon-cleaner scent you get from weaker genetics. Underneath that top note sits a fuel-forward dankness that gives the smoke real depth and body.

On the exhale, you pick up skunky sweetness and a subtle pine tone that lingers on the palate. It's a layered experience: bright and invigorating up front, earthy and complex on the back end. If you've grown or smoked strains like Lemon Haze or Super Lemon OG, Lemon Pie Auto sits in similar territory but with a heavier, more indica-leaning body to the smoke. The aroma during late flower is strong — plan your carbon filter accordingly.

How to Grow Lemon Pie Auto Seeds

1. Germinate your Lemon Pie Auto seeds using the paper towel method or by placing them directly into a moist growing medium. Taproots typically emerge within 24–72 hours.
2. Transplant seedlings into their final container early — autos don't like being repotted mid-grow. An 11–15 litre fabric pot with well-aerated soil or coco works well.
3. Provide 18–20 hours of light per day from seedling through harvest. Autoflowers don't need a light cycle change, so keep the lights on and let her do her thing.
4. Begin LST once she has 4–5 nodes. Gently bend the main stem to open up the canopy. Avoid topping — autos have a fixed vegetative period and don't recover from heavy stress quickly enough.
5. Feed lightly during the first 2–3 weeks, then ramp up nutrients as she enters pre-flower. She's not a heavy feeder, so watch for tip burn and dial back if needed.
6. Expect flower development to begin around week 3–4 automatically. From here, she'll bulk up fast. Keep humidity below 50% during late flower to avoid bud rot in those dense colas.
7. Harvest at 8–9 weeks from seed. Check trichomes with a jeweller's loupe — mostly milky with a few amber heads is the sweet spot for a balanced effect.
8. Dry in a dark, well-ventilated space at around 18–20°C for 7–10 days, then cure in glass jars for at least 2 weeks. The lemon and fuel terpenes really pop after a proper cure.

Indoor vs Outdoor: Where Lemon Pie Auto Performs Best

Indoors is where she really shines — you control the environment, you control the yield. The 100cm height ceiling makes her a dream for 80x80 or 100x100 tents. Outdoors, she's forgiving and doesn't need a specific photoperiod to flower, so you can plant her any time between April and August in most European climates and still pull a decent harvest.