Purple Sponge by MassMedicalStrains
Growers reach for Purple Sponge as an indica-leaning option, a cross of Star Pupil × Prayer Pupil out of MassMedicalStrains. Indoors it typically finishes flowering in around 56 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Purple Sponge grows against.
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Similar strains
| Breeder | MassMedicalStrains |
|---|---|
| Type | indica/sativa |
| Flowering time | ±56 days |
| Environment | Outdoors, Greenhouse |
| Lineage | Star Pupil × Prayer Pupil |
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Growing Purple Sponge: what to expect
As an indica-leaning plant, expect a modest stretch after the flip (roughly 50–100%) and dense bud structure — which makes late-flower humidity discipline the main risk: keep RH in the 40s once buds fatten to stay ahead of mold. Growers familiar with Star Pupil or Prayer Pupil will recognize much of its behavior. Whatever the listing says, the cut in YOUR tent is the ground truth: log feedings, readings, and photos, and let the trends — not the label — drive decisions.
Purple Sponge FAQ
How long does Purple Sponge take to flower?
Purple Sponge typically flowers in around 56 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Purple Sponge an indica or a sativa?
Purple Sponge is listed as indica/sativa.
What are the parents of Purple Sponge?
Purple Sponge was bred from Star Pupil × Prayer Pupil by MassMedicalStrains.
What environment does Purple Sponge like?
Standard cannabis bands work well: VPD 0.8–1.1 kPa in veg and 1.0–1.4 kPa in flower, with humidity stepping down from 65–75% as a seedling to 40–50% in late flower. See the stage-by-stage table on this page.
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Facts compiled from public breeder listings. Growing Purple Sponge? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
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