Gastronaut strain guide
Gastronaut is a high-THC hybrid known for a loud diesel smell with earthy spice and a little citrus. People describe it as uplifting and happy at first, then relaxed. Its family tree is only partly documented.
Where does Gastronaut come from?
One strain database lists it as a cross of Motorbreath #15 and Zero Gravity #60, meaning specific selections of Motorbreath and Zero Gravity. Another database doesn't give parents, and we couldn't confirm the cross on a second source, so treat it as likely rather than settled.
No single breeder is credited. One strain database notes that several American growers sell their own cuts, and some retailers label it as an indica or a sativa rather than a hybrid.
What does Gastronaut smell and taste like?
Gas is the headline: pungent diesel fumes, then earthy spice and black pepper with a light lift of citrus. Some descriptions mention garlic, and one strain database also lists berry and lemon among its flavours.
We couldn't find published terpene results for Gastronaut, so we're not listing any. The peppery, gassy profile is typical of the Chemdawg family that Motorbreath comes from, but your label is the only real source for terpenes.
Gastronaut effects: what people report
People most often describe it as uplifted, happy and euphoric, with a creative start that settles into a relaxed, grounded body feel. One strain database sums it up as mostly calming, and reviewers say it isn't overly heavy.
These are experiences people report, not promises, and there aren't many reviews yet. Dry mouth is the main complaint.
How strong is Gastronaut?
This is a strong one. Listings put it around 24% to 29% THC, with one strain database citing lab results in the mid to high 20s.
If you're new to it or to high-THC flower, start with a small amount and give it time. The numbers on your batch's label matter more than the name.
Buying Gastronaut in Canada
Since several growers release their own cuts, two Gastronaut products may differ in smell and strength. Read the label for the producer and, if listed, the lineage.
Check the THC, CBD and packaging date before you buy.
Gastronaut vs Motorbreath
Motorbreath is the listed parent, a Chemdawg and SFV OG cross known for heavy diesel and a sleepy, relaxed reputation. Gastronaut shares that loud gas smell but adds more spice and citrus, and people describe it as more uplifting and creative at the start, likely thanks to the Zero Gravity side. If you want a heavier night-time feel, Motorbreath fits. For the same gas with a brighter start, try Gastronaut.
Strains like Gastronaut
If you like Gastronaut, these are close in smell or feel:
- Motorbreath: the listed parent, loud diesel with a heavier feel.
- Zero Gravity: the other listed parent, with an upbeat, creative reputation.
- Chemdawg: the classic gassy strain behind Motorbreath.
- GMO: another pungent, savoury strain with a garlic and diesel edge.
