I have 2 malus pink glow which flower very well, but produce few fruits, l also have a john downie which produces 4 times as many fruit. All three are about the same size & pot grown. Can you help re lack of fruits on pink glow.
I found little information to determine the amount of yield that a malus Pink Glow produces.
After speaking with a gardener friend of mine that also grows Crab Apples in containers; he suggested a move to a slightly larger growing container with a good quality potting soil mix.
Avoid using a potting soil with fertilizer additives. Supplement the soil with a good organic compost mix; or if you would like, use a water soluble fertilizer. Do not over feed.
He suggested that your yield may be very normal for your Pink Glow, but the comparison to another variety may be tainting your opinion of the yield.