Runtz vs White Runtz is a closer contest than the names suggest. Leafly, AllBud and Cresco record both as the same cross, Zkittlez × Gelato, and AllBud rates both an even 50/50 hybrid. They’re sold as separate strains, and the real variety is in the crosses that came after: Blue Runtz, Red Runtz, Banana Runtz and Space Runtz each add a different second parent.
| Runtz | White Runtz | Blue Runtz | |
|---|---|---|---|
| Type | Balanced hybrid | Balanced hybrid | Indica-leaning hybrid |
| Lineage | Zkittlez × Gelato | Gelato × Zkittlez | Blueberry × White Runtz |
| US searches a month | 18,100 | 12,100 | 5,400 |
| Vapes we list | 2 | 2 | 1 |
| Tested THC, our listings | — | — | — |
| Median tested THC | — | — | — |
| Price | $10–$39.99 | $10–$39.99 | $34 |
| Brands | Mitten Extracts | Mitten Extracts | Society C |
The same cross, two names
There’s no argument about Runtz: every strain guide we checked gives Zkittlez crossed with Gelato, and Leafly also lists it as Runtz OG. White Runtz is recorded with the same two parents. AllBud rates it 50/50 as well, though Cresco files it as an indica. Sources don’t agree on who bred Runtz, so we leave that out.
What’s certain is that White Runtz became a parent in its own right. Blue Runtz is White Runtz × Blueberry, and two more White Runtz crosses, Compound Z and Lychee, are on our shelves.
The rest of the family
| Strain | Lineage | US searches/mo | Vapes | Tested THC | Price |
|---|---|---|---|---|---|
| Red Runtz | Runtz × Red Pop | 3,600 | 1 | — | $30 |
| Banana Runtz | Banana OG × Runtz | 2,400 | 1 | — | $50 |
| Space Runtz | Runtz × Candy Rain | 2,400 | 1 | — | $40 |
| Gruntz | Gelato × Zkittlez | 3,600 | 2 | — | $10–$30 |
Each of these has a named breeder and a clear recipe. Exotic Genetix bred Red Runtz from Runtz and Red Pop, which Leafly describes as the rarer, soda-flavored half. SolFire Gardens bred Banana Runtz from Banana OG and Runtz. Tiki Madman made Space Runtz from Runtz and Candy Rain. Gruntz is the odd one: Leafly and AllBud record it as Gelato × Zkittlez, the Runtz recipe again, while Hypno Seeds sells a Gruntz bred from Gushers × Runtz.
Which Runtz is the strongest?
People ask this more than anything else about the family, and our data can’t answer it. None of the Runtz-family vapes we list has a published batch result. That’s worth knowing in itself: a strain name tells you nothing about strength until a lab number is attached. For reference, Leafly lists Blue Runtz flower at more than 20% THC and Space Runtz at 22%.
What we carry
Mitten Extracts makes Runtz, White Runtz and Gruntz, each as a 1 g 510 cart at $10 and a disposable, all labeled hybrid. Society C makes Blue Runtz as a 2 g live resin disposable and Red Runtz as a half-gram live hash rosin pen, the two versions here extracted from the plant and not flavored afterwards. Breeze Canna sells Space Runtz as a 1 g live resin PLUS device, and Harbor House Collective lists Banana Runtz as a 2 g disposable.
If it’s the candy flavor you’re after, the live resin and rosin versions are the ones to look at. The whole family is reachable from Weed Pen.
Runtz questions
What’s the difference between Runtz and White Runtz?
On paper, none: both are recorded as Zkittlez × Gelato and rated 50/50. They’re sold as separate cuts, and White Runtz has parented its own crosses, such as Blue Runtz.
Which Runtz is the strongest?
We can’t say from data: none of the Runtz-family vapes we list publishes a batch result. Leafly lists Space Runtz flower at 22% THC.
Is White Runtz an indica or sativa?
AllBud rates it an even 50/50 hybrid. Cresco files it as an indica.
What are the top Runtz strains?
We carry seven: Runtz, White Runtz, Blue Runtz, Red Runtz, Banana Runtz, Space Runtz and Gruntz. Runtz and White Runtz draw the most searches.
Is Gruntz the same as Runtz?
Leafly and AllBud record the same parents for both. Hypno Seeds’ Gruntz is a different cross, Gushers × Runtz.
Sources and method
- Leafly, AllBud and Cresco entries for Runtz and White Runtz; Leafly, Weedmaps, SeedFinder and Hypno Seeds for the crosses, as cited on our strain pages
- Weed Pen catalogue and strain pages
Catalogue figures are counts, medians and ranges over the listings on this site on September 19, 2026. Tested THC is the maker’s own batch result as shown on each listing; we don’t run our own lab tests. Products are for adults 21 and over, and cannabis laws differ by state.