Salpiglossis
Painted Tongue
About the plant
What it is and where it grows — not part of any germination protocol.
- Note
- Deno worked with garden hybrids rather than a named species, so these results are genus-level.
Toxicity is noted only where a source states it. No note here is not a finding of safety.
Source: Seed Germination Theory and Practice, 2nd ed. — N. C. Deno.
This source reports two treatments. Both are shown.
Protocol 1
DerivedN. C. Deno, 1993Difficulty Low
Start around March 22, 2027 for a May 3 last frost.
Sow and cover
Temperature: 70°F 21°C Light: either
No stated waiting before sowing. Then 14 days to germinate.
100% germination in 14 days.
Every seed, in a fortnight. Neither light nor GA-3 changed anything. Deno's seed was garden hybrids, not a named species.
Protocol 2
DerivedN. C. Deno, 1993Difficulty Low
Start around February 1, 2027 for a May 3 last frost.
Cold moist stratification
Temperature: 40°F 4°C Light: either
No stated waiting before sowing. Then 63 days to germinate.
100% germination in 49–63 days.
Cold gets there too, and takes two months longer about it. Deno's seed was garden hybrids, not a named species.
This source doesn't state how long.