Heliotroop (June) Heliotroop (July) Heliotroop (May) Heliotroop (May) Heliotroop Broad leaves with a violet-purple cast. £3.20 Out of stock. Anyone familiar with Heliotrope flowers will know what to expect from the colour, that distinctive violet-purple hue. The large leaves are distinctive too, getting broader near the ends before tapering abruptly to the tips. Large rosettes. Ben J.M Zonneveld (NL) 1995 Sent in 9cm pots as growing, established plants.