Gazinas are awesome. I am seeding the Kiss variety this year
Salvia - I have not seen salvia that big before.
Here's one of my favorite annuals
LAVATERA - aka Annual Rose Mallow or Tree Mallow
Super easy from seed. Can be direct sowed, winter sowed or started early indoors about 4 weeks before last frost. Silver Cup is available in a seed-tape, which will become a beautiful 4 foot hedge.
The stamens are the identical color of the flower petals. The flower is a hibiscus or single hollyhock shape and about 4" diameter. Multi stemmed, bushy plants & lots of flowers.
Likes full sun, will flower about 12 weeks after germination. Low maintenance.
Silver Cup is light pink, Ruby Regis is vibrant cerise pink, Trimestris is a rosy red. Mont Blanc is the purist white (picture)