Only 1 of 4 chaenomeles in flower

QuestionsOnly 1 of 4 chaenomeles in flower
Col13 Staff asked 9 years ago

2 years ago I planted 4 chaenomeles ‘Jetrail’ against a fence in a semi-shaded spot in my back garden. To date, only 1 has bloomed. Any ideas as to why the others haven’t yet when conditions are the same for all 4? Do they need more time to establish themselves maybe?