Lemon Haze Fast Version: Early Flowering Cannabis Stage.

How to Grow Lemon Haze Fast Version

Lemon Haze Fast Version is the fast-flowering version of Lemon Haze, a 60% indica-dominant plant. It carries a THC level of 16 to 20%, placing it in the medium range, and delivers a calming, relaxed and deeply soothing effect over a sweet, zesty citrus flavor. This guide walks you through the whole grow, from germinating the seeds to the final cure.

The Fast Version is the draw here: it is a photoperiod plant, not an autoflower, but it finishes bloom in just 9 weeks once you flip the lights. It stays a compact 1.2 m, gives a high yield, and its quick turnaround makes it forgiving and well suited to first-time growers.

Lemon Haze Fast Version at a Glance

Before you plant anything, it helps to see the full picture in one place. Here is the quick profile for this fast-flowering, citrus-forward plant, taken straight from the strain’s grow data.

Seed typeFast-flowering (photoperiod, feminized)
GeneticsLemon Haze x a fast-flowering line
Phenotype60% Indica / 40% Sativa
THC16–20% (medium)
Flowering time9 weeks
HarvestAll season
Heightup to 3.94 ft (1.2 m)
Yield indoor1.47–2.13 oz/ft²
Yield outdoor24.69–31.75 oz/plant
ClimateTemperate
FlavorsCitrus, Sweet
EffectsCalming, Relaxed, deeply soothing
DifficultyBeginner-friendly

These are fast-flowering seeds, so you get photoperiod genetics with a much shorter bloom. Its 60% indica lean places it among the indica seeds, and its Lemon Haze heritage keeps it among the haze strains. Its strong output also earns it a spot with the high-yielding seeds.

How to Germinate Lemon Haze Fast Version Seeds

A healthy harvest starts at germination. The paper towel method is hard to beat: fold the Lemon Haze Fast Version seeds inside two damp sheets, slide them between two plates, and keep them somewhere dark at 70 to 79°F. A taproot usually appears in two to five days.

Once the taproot is a few millimeters long, move each seed root-down about 1 cm deep into a small pot of light, airy medium. Keep it lightly moist rather than soaked, hold humidity around 65 to 70%, and give soft light while the first true leaves open. Because it is a photoperiod plant, you have the normal veg window to build a strong root system before you flip it.

Starter tips

  • Use plain, lightly pH-balanced water (pH 5.5 to 6.5) for the first week.
  • Keep seedlings warm and humid, but never waterlogged.
  • Hold off on nutrients until the second set of serrated leaves appears.

Growing Lemon Haze Fast Version in the Vegetative Stage

Unlike an autoflower, Lemon Haze Fast Version is a photoperiod plant, so you control the veg stage with the light schedule. Keep it on 18 hours of light a day for as long as you want it to grow, aim for day temperatures of 68 to 79°F, and hold humidity around 50 to 60%. As a 60% indica it stays compact and bushy, reaching up to about 1.2 m.

This is the stage to shape the plant. Topping early and using low-stress training to spread the branches opens up the canopy, improves airflow, and lifts the yield. Because this version blooms fast once flipped, give it enough veg time first so it has the frame to carry its dense buds.

Its compact build and all-season nature make it productive both indoors and out:

  • Southern California and the Southwest: the warm, dry season suits its quick 9 week bloom and lets you time an early finish before any autumn damp.
  • Pacific Northwest and cooler states: its fast flowering is a real advantage, letting you harvest before the cold and wet of late autumn arrive.
  • Short-season gardens: because the bloom is so quick, it fits climates where a standard photoperiod plant would run out of warm weather.

Flowering and Buds of Lemon Haze Fast Version

Indoors, flip Lemon Haze Fast Version to a 12/12 light cycle to trigger flowering. This is where the Fast Version earns its name: bloom runs just 9 weeks, shorter than a standard photoperiod plant. Outdoors it is all-season, so you can time the quick finish to your local window.

Through bloom, drop humidity to 40 to 45% and keep air moving so the dense flowers stay clean. It packs on compact, resinous buds with a bright, sweet citrus aroma, the zesty lemon-haze signature of its heritage.

At 16 to 20% THC it sits in the medium range, giving a calming, relaxed and deeply soothing body effect, without the long wait a normal photoperiod bloom would demand.

Common Problems and Pro Tips

Lemon Haze Fast Version is beginner-friendly, but its fast, dense flowering points to a few things worth watching.

  • Bud rot in dense colas: its tight, resinous flowers can trap humidity, so keep a fan moving and humidity below 45% late in flower.
  • Veg long enough first: because bloom is short, give it solid veg time so the plant has the size to fill out before it flips.
  • Watch the citrus smell: it gets loud in flower, so run a carbon filter indoors if odor is a concern.

Expert tip: the Fast Version rewards good timing. Decide your final plant size during veg, flip while there is still room to stretch, and have your drying space ready, because a 9 week bloom comes around faster than growers expect.

Aroma, Flavor and Effects

The nose is bright and zesty: a sweet lemon-citrus top note with a clean, fresh lift, the classic lemon-haze signature. It smells lively and tangy rather than heavy, and the sweetness builds as the buds cure.

The flavor follows the nose, sweet and zesty citrus with a clean finish. On the effect side it is calming, relaxed and deeply soothing, a grounded body feel despite its bright aroma. Because THC runs a moderate 16 to 20%, it stays mellow and easy to enjoy.

Dominant terpenes

Lemon Haze Fast Version carries a bright, well-rounded terpene profile built on five main players. Myrcene lays down a soft, sweet base, Caryophyllene adds a warm, peppery spice, Terpinolene a fresh, complex lift, Linalool a soft floral note, and P-Cymene a sharp, fresh herbal accent. Together they shape its zesty, sweet-citrus character.

Nutrient Schedule

Treat the figures below as a starting map, not a rulebook. Lemon Haze Fast Version is a steady feeder, so read the plant first: tip burn means back off, while pale, slow growth means it wants a little more. All values use EC.

StageEC
Seedling0.4–0.6
Growth0.8–1.2
Early flower1.2–1.4
Full flower1.4–1.6
Flush0.0–0.4

Keep the pH around 6.0 to 6.5 in soil and 5.5 to 6.0 in hydro so the roots can actually take up what you feed.

What to Do With Your Trim: Extracts and Hash

Lemon Haze Fast Version builds a heavy coat of resin, so its trim is genuinely worth keeping. The sugar leaves you take off while manicuring are loaded with trichomes and suit Ice Water Hash, where cold water and agitation separate the resin heads into a clean, solventless concentrate. Pressing that hash into rosin keeps the sweet citrus flavor intact, or you can run a solvent extraction if that is your setup. The bare stems will not extract, but chopped and composted they feed organic matter back into the soil for your next grow.

Harvesting, Drying and Curing Lemon Haze Fast Version

Timing the harvest comes down to the trichomes. Grab a loupe and watch the heads turn from clear to milky white; a scattering of amber signals peak ripeness. With this Fast Version it ripens in just 9 weeks after the flip, and because it is all-season you simply harvest when the plant is ready.

After the cut, hang the branches in a dark room at 59 to 68°F with humidity near 50% and gentle air movement. Slow beats fast: drying over 10 to 14 days protects the sweet citrus aromas that define this strain. When the small stems snap instead of bending, move the buds into jars.

Cure in sealed glass, opening the jars daily for the first week to let moisture escape, then easing off as the aroma deepens. Two to four weeks of patience here is where the bright, sweet citrus really comes forward, and it is the step most first-time growers rush.

Fresh Lemon Haze Fast Version buds being hand-trimmed and stored in glass jars to preserve their lemon aroma and potent resin content.

Frequently Asked Questions

Is Lemon Haze Fast Version an autoflower?

No, Lemon Haze Fast Version is not an autoflower. It is a fast-flowering photoperiod strain, so you still switch it to a 12/12 light cycle to start bloom. The difference is speed: its flowering runs just 9 weeks, shorter than a standard photoperiod plant, while keeping full photoperiod genetics.

How long does Lemon Haze Fast Version take to flower?

Lemon Haze Fast Version flowers in just 9 weeks once you switch it to a 12/12 light cycle indoors. That fast bloom is the whole point of the Fast Version. Outdoors it is all-season, so you can time its quick finish to your local climate window.

How strong is Lemon Haze Fast Version?

Lemon Haze Fast Version has a THC level of 16 to 20%, which places it in the medium range. The effect is calming, relaxed and deeply soothing, a grounded body feel rather than a racy one. That moderate potency makes it a mellow, approachable strain for a wide range of growers.

How much does Lemon Haze Fast Version yield?

Lemon Haze Fast Version is high-yielding. Indoors it gives around 1.47 to 2.13 oz/ft², and outdoors it can reach a big 24.69 to 31.75 oz per plant in good conditions. Enough veg time, topping and an even canopy are what help it fill out to its full potential.

What does Lemon Haze Fast Version taste and smell like?

Lemon Haze Fast Version leads with a bright, sweet lemon-citrus aroma with a clean, fresh lift, the classic lemon-haze signature. It is zesty and tangy rather than heavy. Both the aroma and flavor deepen as the buds cure slowly in the jar after harvest.

Is Lemon Haze Fast Version an indica or a sativa?

Lemon Haze Fast Version is indica-dominant, at 60% indica and 40% sativa. Built from Lemon Haze crossed with a fast-flowering line, it has a compact, bushy structure and a calming, relaxed and deeply soothing effect, lifted just slightly by its sativa side.

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