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Hypericum perforatum (St. John's Wort, Klamath Weed)


Date Action
Oct 06 2009toni (36069) added "September" to Flowering End
Oct 06 2009toni (36069) added "June" to Flowering Start
Oct 06 2009toni (36069) added "6b (to 0 F / -18 C)" to Zones / Hardiness
Oct 06 2009toni (36069) added "3a (to -35 F / -37 C)" to Zones / Hardiness
Oct 06 2009toni (36069) added "3b (to -30 F / -34 C)" to Zones / Hardiness
Oct 06 2009toni (36069) added "6a (to -5 F / -21 C)" to Zones / Hardiness
Oct 06 2009toni (36069) added "7a (to 5 F / -15 C)" to Zones / Hardiness
Oct 06 2009toni (36069) added "7b (to 10 F / -12 C)" to Zones / Hardiness
Oct 06 2009toni (36069) added "8a (to 15 F / -9 C)" to Zones / Hardiness
Oct 06 2009toni (36069) added "8b (to 20 F / -7 C)" to Zones / Hardiness