How to Grow Guanabana
Guanabana is a 60% sativa-dominant feminized strain, a cross of Amnesia Haze and White Widow. It carries a THC level of 16 to 18%, placing it in the medium range, and delivers a happy, relaxed and talkative effect over a sweet, fruity flavor. This guide walks you through the whole grow, from germinating the seeds to the final cure.
It grows tall, up to around 3 m, finishes flowering in 8 to 10 weeks, and gives a high yield. Its vigorous, forgiving classic genetics make it a friendly pick for first-time growers, as long as you plan for its height.
Recommended Strains
Guanabana at a Glance
Before you plant anything, it helps to see the full picture in one place. Here is the quick profile for this tall, tropical-fruity sativa, taken straight from the strain’s grow data.
| Seed type | Feminized (photoperiod) |
|---|---|
| Genetics | Amnesia Haze x White Widow |
| Phenotype | 60% Sativa / 40% Indica |
| THC | 16–18% (medium) |
| Flowering time | 8–10 weeks |
| Outdoor harvest | October |
| Height | up to 9.84 ft (3 m) |
| Yield indoor | 1.64–1.97 oz/ft² |
| Yield outdoor | 21.16–24.69 oz/plant |
| Climate | Temperate |
| Flavors | Fruity, Sweet |
| Effects | Happy, Relaxed, Talkative |
| Difficulty | Beginner-friendly |
These are feminized seeds, so every plant flowers female and you skip culling males. Its 60% sativa lean places it among the sativa seeds, and its Amnesia Haze side keeps it among the haze strains. Its strong output also earns it a spot with the high-yielding seeds.
Promos & Deals
How to Germinate Guanabana Seeds
A healthy harvest starts at germination. The paper towel method is hard to beat: fold the Guanabana 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 full 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 Guanabana in the Vegetative Stage
As a photoperiod plant, you control the veg stage with the light schedule. Keep Guanabana on 18 hours of light a day, aim for day temperatures of 68 to 79°F, and hold humidity around 50 to 60%. As a 60% sativa with Amnesia Haze in its blood, it is a tall, vigorous grower, stretching toward 3 m, so height management starts here.
Because it reaches so high, keep its veg short and shape it aggressively. Top early, and use low-stress training or a screen (ScrOG) to spread the plant wide rather than letting it rocket up. For indoor tents this is essential, since an untrained Guanabana will quickly outgrow the space. The reward is a wide, even canopy carrying its high yield.
Its towering frame and October finish shape where it does best:
- Southern California and the Southwest: the long, warm season gives its tall sativa frame the room and time it wants.
- Greenhouses and large outdoor plots: with vertical space, it rewards you with a big, productive plant.
- Indoor tents: only with aggressive training, a short veg and a screen to keep the 3 m height in check.
Flowering and Buds of Guanabana
Indoors, flip Guanabana to a 12/12 light cycle to trigger flowering, which runs 8 to 10 weeks. Outdoors it ripens through October. Expect a big stretch after the flip given its height, then long, resinous colas filling in along the tall frame.
Through bloom, drop humidity to 40 to 45% and keep air moving so the long flowers stay clean. The buds build a sweet, tropical fruity aroma, a juicy nose that lives up to the strain’s soursop namesake, carried by its Amnesia Haze and White Widow parents.
At 16 to 18% THC it sits in the medium range, giving a happy, relaxed and talkative effect that stays bright and sociable.
Common Problems and Pro Tips
Guanabana is beginner-friendly in temperament, but its extreme height points to a few things worth planning for.
- Control the height: at up to 3 m it will outgrow most indoor tents, so top early, keep veg short, and run a screen to spread it wide.
- Support the long colas: its tall, productive branches can bend late in flower, so stake or net them before they strain.
- Keep airflow up: its long colas benefit from good air movement and humidity below 45% late in flower.
Expert tip: height is the one thing to respect with Guanabana. Decide your final size during veg, train early rather than late, and give it vertical room, and its tall, resinous frame will reward you with a big, sweet-fruity harvest.
Aroma, Flavor and Effects
The nose is sweet and juicy: a tropical, fruity aroma that nods to its guanabana (soursop) namesake, bright and candy-like rather than earthy. The sweetness builds as the buds cure, a fun, crowd-pleasing profile from its Amnesia Haze and White Widow roots.
The flavor follows the nose, sweet and fruity through to the finish. On the effect side it is happy, relaxed and talkative, a bright, sociable feel that suits daytime and shared sessions. Because THC runs a moderate 16 to 18%, it stays mellow and easy to enjoy.
Dominant terpenes
Guanabana’s listed terpene profile centers on a single dominant compound: Myrcene. Myrcene lays down a soft, sweet, fruity base that anchors the strain and carries its tropical, soursop-like character. With one clear lead terpene, the aroma stays focused and approachable rather than complex, a clean, sweet-fruity profile front to back.
Nutrient Schedule
Treat the figures below as a starting map, not a rulebook. Guanabana is a tall, vigorous sativa, so read the plant first: tip burn means back off, while pale, slow growth means it wants a little more. All values use EC.
| Stage | EC |
|---|---|
| Seedling | 0.4–0.6 |
| Growth | 0.8–1.2 |
| Early flower | 1.2–1.4 |
| Full flower | 1.4–1.6 |
| Flush | 0.0–0.4 |
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
Guanabana puts down a good coat of resin on its long colas, so its trim is worth keeping rather than tossing. The sugar leaves you take off while manicuring hold 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, fruity 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 Guanabana
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. Indoors this lands 8 to 10 weeks after the flip, and outdoors the plants are ready through October.
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, fruity 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 sweet, tropical fruit really comes forward, and it is the step most first-time growers rush.
Frequently Asked Questions
Is Guanabana easy to grow for beginners?
Yes, Guanabana is beginner-friendly in temperament, with one big caveat: it grows tall, up to about 3 m. It is otherwise forgiving and finishes in 8 to 10 weeks. Plan for its height with early topping, a short veg and a screen, and run a carbon filter indoors as its sweet-fruity smell builds in flower.
How long does Guanabana take to flower?
Guanabana flowers in 8 to 10 weeks once you switch it to a 12/12 light cycle indoors. Grown outdoors, it is ready through October. Given its height, expect a big stretch after the flip, then long, resinous colas filling in along the tall frame over the rest of bloom.
How tall does Guanabana grow?
Guanabana grows tall, reaching up to around 3 m, thanks to its Amnesia Haze sativa side. That height is the main thing to plan for: top early, keep veg short, and use low-stress training or a screen to spread it wide. Indoors it needs active height control; outdoors it wants vertical room.
How strong is Guanabana?
Guanabana has a THC level of 16 to 18%, which places it in the medium range. The effect is happy, relaxed and talkative, a bright, sociable feel rather than a heavy one. That moderate potency makes it a mellow, approachable strain well suited to daytime and social use.
How much does Guanabana yield?
Guanabana is high-yielding. Indoors it gives around 1.64 to 1.97 oz/ft², and outdoors it reaches roughly 21.16 to 24.69 oz per plant in good conditions. Its tall frame, trained into an even canopy with a screen, is what lets it fill out to its full potential.
What does Guanabana taste and smell like?
Guanabana leads with a sweet, tropical fruity aroma that nods to its soursop namesake, bright and candy-like rather than earthy. It comes from its Amnesia Haze and White Widow parents. Both the aroma and flavor deepen as the buds cure slowly in the jar after harvest.
