I've got 4 blueberry bushes the variety is 'top hat' 2 of the bushes are either 3 or 4 years old & the remaining 2 are a year younger.
Ive got the bushes in very large pots & I've made sure that they are in ericacious compost. However only one of the bushes (one of the older ones) ever produces any fruit the other bushes don't even flower or if they do the flowers are very small & just drop off & die ???? not leaving any fruit afterwards unfortunately I was broken in to earlier in the year & my purse was stolen. The thieves actually burnt it & in the process also burnt the fruit producing bush!
Luckily it has still produced some fruit but is there any reason why the other bushes aren't producing fruit? The bushes are all in the same size pot & are all in the same place, all receive the same amount of water & the same brand of compost was used throughout. Does anyone know why the other bushes aren't producing fruit? Is there anything I can do to encourage the other bushes to fruit? Any advice gratefully received!