Growing Ice Cream Cake: flowering time, yield and breeder specs

Ice Cream Cake flowers in about 8–9 weeks according to Leafly and Zamnesia, in about 56 days according to Weedmaps, and in 55–65 days for Barney’s Farm’s seed version. Expect a medium-tall plant with dense, frosty flowers and a large yield; sources disagree on how hard it is to grow well.^1,2,3,4

Breeder specs side by side

Source and version	Flowering	Indoor yield	Outdoor	Difficulty
Barney’s Farm, feminized (Gelato #33 × Wedding Cake)	55–65 days	600–700 g/m²; 90–110 cm	1,500–2,000 g per plant; 150–200 cm; 3rd–4th week of September⁴	—
Zamnesia Seeds, feminized	8–9 weeks	Up to 19.4 oz/m²; 3.9 ft	Up to 35.3 oz per plant; 6.6 ft; September–October²	Moderate²
Zamnesia Seeds, autoflower	9–10 weeks seed to harvest	Up to 17.6 oz/m²; 3 ft	Up to 5.3 oz per plant; 3.9 ft⁵	Moderate⁵
SeedFinder, Seed Junky entry	“Generally fast-flowering” (no figure)	Up to 600 g/m²	Up to 2 kg per plant⁶	—
SeedFinder, Mad Scientist Genetics (regular seeds)	56–63 days	Medium to heavy; medium to tall	—⁷	—
Leafly (strain page)	8–9 weeks	Large; medium-tall	Indoors or outdoors¹	Intermediate and advanced growers¹
Weedmaps (strain page)	About 56 days	Average-sized plants (Seed Junky version)	—³	An experienced hand for the largest yields³

Seed-company figures are the sellers’ own claims, and their seeds are not Seed Junky’s original cut.

What the plant is like

Expect dense, resin-coated flowers. AllBud describes small, dense, grape-shaped forest-green buds with thick orange hairs and frosty white trichomes; GreenState describes chunky, bulbous cones in cool green with plum-purple bits, and Leafly calls it a green and purple beauty with frosty buds.^8,9,10 Leafly says it grows medium-tall, indoors or out, with a large yield; Barney’s Farm gives 90–110 cm indoors and 150–200 cm outdoors for its version.^1,4

What to watch for

Difficulty is the disputed part. Leafly recommends it for intermediate and advanced growers and Weedmaps says the largest yields need an experienced hand, while Zamnesia rates its seed versions moderate.^1,2,3 Leafly’s 2021 trend report went further: it takes a master grower to bring out the best in Ice Cream Cake, and lesser crops were “destined to become bargain B-buds” or vape oil.¹¹ Zamnesia describes its autoflower as mold- and pest-resistant, a seller’s claim for that version only.⁵

Seeds and the law in the US

Under the amended federal definition of hemp, viable seeds from cannabis plants above 0.3% total THC, including THCA, are not hemp.¹² Congress delayed that exclusion, with most of the new definition, from Nov 12 to Dec 11, 2026; only the exclusion of products with cannabinoids the plant cannot produce naturally starts on Nov 12.¹³ Home cultivation rules are set by each state. This site does not sell seeds.

Sources

Leafly, Ice Cream Cake strain information. Accessed Oct 4, 2026.
Zamnesia, Ice Cream Cake (Zamnesia Seeds) feminized. Accessed Oct 4, 2026.
Weedmaps, Ice Cream Cake (aka Cake’n Cream) strain page. Accessed Oct 4, 2026.
Barney’s Farm, Ice Cream Cake (feminized seeds). Accessed Oct 4, 2026.
Zamnesia, Ice Cream Cake Autoflower (Zamnesia Seeds) feminized. Accessed Oct 4, 2026.
SeedFinder, Ice Cream Cake (Seed Junky Genetics): strain info. Accessed Oct 4, 2026.
SeedFinder, Ice Cream Cake (Mad Scientist Genetics): strain info. Accessed Oct 4, 2026.
AllBud, Ice Cream Cake marijuana strain information and reviews. Accessed Oct 4, 2026.
GreenState, Ice Cream Cake strain: a sweet treat for mind and body (Cara Wietstock) (2024-02-12). Accessed Oct 4, 2026.
Leafly, Leafly’s 100 best weed strains of all time (2026-07-14). Accessed Oct 4, 2026.
Leafly, Leafly Buzz: 8 cannabis cultivars trending up in 2021 (David Downs) (2021-01-07). Accessed Oct 4, 2026.
Congressional Research Service, Changes to the statutory definition of hemp and implications for agricultural policy (IF13136) (2026-09-28). Accessed Oct 4, 2026.
U.S. Government Publishing Office, Continuing Appropriations and Extensions Act, 2027 (P.L. 119-103), sec. 2019. Accessed Oct 4, 2026.