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Flower Scott Zona from Miami, Florida, USA CC BY 2.0 About the plant What it is and where it grows — not part of any germination protocol.
Habit tuberous geophyte Plants of the World Online
Flower Golden yellow Wikipedia
Native range Argentina Northwest, Chile Central GBIF Backbone Taxonomy Toxicity is noted only where a source states it. No note here is not a finding of safety.
Sources: Plants of the World Online — Royal Botanic Gardens, Kew; Wikipedia — Wikipedia contributors; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.
Worth knowing In the mountains of Chile and Argentina this nasturtium is called soldadito grande de la cordillera, "great soldier of the mountains". It grows well on hot, dry banks. Wikipedia: Tropaeolum polyphyllum For a May 3 last frost, start this around March 15, 2027 — about 7 weeks ahead.
Using a national average last frost of May 3, which is wrong for most places. Put in your zip code for your own dates. Plant words explained .
Protocol N. C. Deno, 1993 Difficulty Low Rated by us, not by the source.
1 Cold moist stratification
Temperature: 40°F 4°C
Germination happens during step 1, in 21 days.
100% germination in 21 days.
Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Tropaeolum p. 225Public domain Show the original text Tropaeolum (Tropaeolaceae). Although they have not been exhaustively studied, the best germinations were obtained by giving the seeds -4w at 70 and shifting to 40. Germination at 40 occurs in the 3rd w, but the seedlings must be kept at 40 until the stem begins to emerge (hypogeal). Several of these species are hardy in England if the tuber is below frost line. Young plants need to be grown under milder conditions until is tuber is large enough to place below frost line. It remains to be seen if deep planting of the tuber can effect hardiness in Eastern U.S. T. polyphyllum germ. 5/5 in 3rd w at 40 if given a prior 4 w at 70. When sown directly at 40 1/3 germ. in the 4th w. If after 6w at 40 the seed was given 4 w at 70 and then back to 40, the remaining 2/3 germ. in the 3rd w. Seed Germination Theory and Practice, 2nd ed., Ch. 20, Tropaeolum p. 225. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list. How each step is done , in Deno’s words, and what Verified and Derived mean.
Germination trials Readers’ own records of sowing this species, published after review. Share your trial · All trials
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