Answer: 'Supertunia' seed is not available to consumers, unfortunately. The plant is patented and licenced for sale only through Proven Winners (www.provenwinners.com - see their Spring Product page) which supplies nurseries. However, multiflora petuniasin general have better longevity and heat tolerance than most hybrids (see pg 45). Burpee's 'Waves' (pg 7) are also reliable performers.
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