Amaretto Tarmac (Seedstockers)

Amaretto Tarmac Seeds by Seedstockers

Amaretto Tarmac is a sativa-dominant feminised cannabis seed from Seedstockers that crosses Amaretto Sour with Apollo Black Cherry to produce one of the funkiest terpene profiles we've come across in years. An 80% sativa with just 8 weeks of flowering time — that's almost unheard of for a sativa-leaning plant. She throws out elongated, dense buds coated in trichomes, with colours ranging from bright green to deep purple depending on the phenotype you pull. If you're after something that genuinely smells and smokes like nothing else in your tent, this is the one.

Why Grow Amaretto Tarmac Feminised Seeds?

Most sativa-dominant strains test your patience. They stretch endlessly, flower for 12 weeks, and half the time the yield doesn't justify the wait. Amaretto Tarmac breaks that pattern. Seedstockers bred her from Amaretto Sour and Apollo Black Cherry specifically to keep the sativa high and terpene complexity while trimming the flowering window down to roughly 8 weeks indoors. Outdoor growers can expect harvest-ready plants by late September.

The real draw, though, is the smell. We've read "funky" on a hundred seed descriptions, and most of them just smell vaguely skunky. Amaretto Tarmac actually delivers something different — hot tarmac, bitter amaretto liqueur, dark cherries, and a cola sweetness underneath. It's the kind of jar you open and everyone in the room asks what it is. The flavour carries through to the smoke, which is bitter and nutty with a fruity finish.

The one honest limitation: she's not a set-and-forget strain. Seedstockers rates her as best suited for intermediate to experienced growers. The significant internodal spacing means you'll want to manage your canopy — think topping, LST, or SCRoG netting to keep things even under the light. She can stretch to nearly three times her vegetative height once you flip to bloom, so plan your vertical space accordingly. Pay close attention to nutrient levels, soil composition, and pest prevention. If you're used to growing compact indicas that basically run themselves, Amaretto Tarmac will ask a bit more of you — but she pays it back at harvest.

Amaretto Tarmac Growth Traits and Flowering Time

Amaretto Tarmac feminised seeds produce vigorous seedlings that develop long, branchy structures with bright green fan leaves during veg. Once flipped to 12/12, expect a significant stretch — up to 3x the vegetative height. That stretch is typical for sativas, but the 8-week flowering period is not. For comparison, many sativa-dominant strains run 10-12 weeks in bloom, so you're saving a full month of electricity and patience.

Indoor growers who want to bring out the purple phenotype should lower temperatures during the dark period in bloom — dropping to around 15-18°C at night encourages anthocyanin production, which is what gives the calyxes their deep purple colouring. It's not guaranteed on every plant, but the genetics are there. Green phenos are equally attractive, with bright calyxes, orange pistils, and a thick trichome coating.

Terpene Profile and Aroma of Amaretto Tarmac Seeds

The terpene profile is where Amaretto Tarmac genuinely stands apart from the pack. Seedstockers describes the aroma as hot tarmac, bitter amaretto, cherries, and cola — and from what growers report, that's not marketing exaggeration. The "tarmac" note is that warm, almost petroleum-like funk you sometimes get from strains with unusual terpene combinations. Layered underneath is the bitter almond character of amaretto and a dark cherry sweetness inherited from the Apollo Black Cherry parent.

According to research published in PMC, beta-caryophyllene is the most available sesquiterpenoid in cannabis plants and extracts, and it's a spice-forward terpene that contributes peppery, warm notes (PMC7763918). Strains with complex aromatic profiles like Amaretto Tarmac typically carry a varied mix of both monoterpenes and sesquiterpenes, which is what produces that layered, evolving smell as you break apart the buds. The cola note in particular is unusual — you don't get that from a single terpene but from a specific combination that the Amaretto Sour x Apollo Black Cherry cross seems to produce reliably.

From a sensory standpoint: crack open a cured jar of Amaretto Tarmac and the first hit is that warm, almost bituminous funk. Give it a second and the sweet cherry-cola comes through. Grind it up and the bitter almond amaretto note dominates. It's genuinely one of those strains where the smell changes at every stage — growing, drying, curing, and smoking.

How to Grow Amaretto Tarmac Feminised Seeds

1. Germinate your Amaretto Tarmac seeds using your preferred method — paper towel, direct sow, or jiffy pellets. Seedstockers genetics tend to pop reliably within 24-72 hours.
2. Transplant seedlings into their final containers once they've developed 2-3 sets of true leaves. A 15-20 litre pot works well indoors. Use a well-aerated soil mix with good drainage — coco-perlite blends also work.
3. During vegetative growth, top or FIM the main stem early to encourage lateral branching. The significant internodal spacing means untrained plants will get tall and lanky. SCRoG netting is your best friend here — weave branches through the net during late veg and early bloom to create an even canopy.
4. Flip to 12/12 when plants reach roughly one-third of your desired final height. The 3x stretch during bloom is real, so if your tent ceiling is 200cm, flip at around 40-50cm (accounting for pot height and light distance).
5. During bloom, monitor nutrient levels carefully. Sativas are generally more sensitive to overfeeding than indicas. Start at 50-60% of the manufacturer's recommended strength and increase gradually based on how the plant responds.
6. To encourage purple colouring, drop nighttime temperatures to 15-18°C during weeks 4-6 of bloom. Not every phenotype will turn purple, but the genetics support it.
7. Harvest at approximately 8 weeks of bloom when trichomes show a mix of cloudy and amber heads. Outdoor plants should be ready by late September in most European climates.
8. Dry slowly in a dark, well-ventilated space at around 18-20°C and 55-60% humidity for 10-14 days. Cure in glass jars for at least 2-3 weeks — the amaretto and cherry notes develop significantly during curing.

Amaretto Tarmac vs Other Sativa Seeds

If you're comparing Amaretto Tarmac to other sativa-dominant options, the 8-week flowering time is the standout differentiator. Most sativas in the Seedstockers catalogue — and across other seed banks — run 10-12 weeks in bloom. That's a significant difference in electricity costs, time investment, and risk exposure to pests and mould.

The Apollo Black Cherry parentage gives Amaretto Tarmac a structure and resin production that many pure sativas lack. The buds are dense and elongated rather than wispy and airy, which means better bag appeal and easier trimming. We'd pick Amaretto Tarmac over a standard Haze-type sativa if you want the uplifting sativa character without the 3-month flowering marathon.