|Are these plants annuals? Sweet potato vine, browallia, Helichrysum petiolare, and Scaevola.
|Browallia is an annual. Helichrysum petiolare, "licorice plant" is grown as an annual in your climate. Sweet Potato vine, (Ipomoea) can be annual or perennial, depending on type. The common morning glory is treated as a summer annual. Scaevola isa shrubby perennial.|