The 30-day challenge, day 20

Flowers, watercolour on paper, 29.5 x 21 cm

There's not much growing in my garden... My rosebushes are on strike, it seems. Plenty of land, but nothing colourful. Fortunately, a friend planted some colourful flowers in his garden. 
I, not having a green thumb, don't have a clue what they're called. However, I do love the lilac and magenta, and I have set them against their complementary colour, which is yellow!