You want bees to polinate it.
Normally feijoas are polinated by birds thats why you can eat the petals of the flowers.Birds come to eat the petals and they polinate the flowers.
Somme people think the edible petals are better than the fruit and in case you dont get fruit iet,try the petals.
For polination you need another variety or a feijoa grown from seeds.The otther variety can be self polinating like Gemini wich makes small fruit but its regarded as the only true self polinated feijoa here.
Also in the first year i keep my feijoas in the greenhouse in winter because i want them to grow faster but they are cold hardy.