Stephanotis leaves are turning a mottled yellow, why?

Question

the plant is outside climbing up the house on the Spanish Mediterranan coastline and has flourished there for 20+ years. Last 2 years I have noticed a discolouring on the leaves and do not know why. Also when would be the best time of year to cut it back as lower part is very woody/branchy but no leaves.

Answer 1

The discoloration may be due to a nutrient deficiency. Fertilize with a complete organic fertilizer.

Prune moderately in late winter, early spring. You can do some reduction and thinning to open for sunlight to the lower stems, which may stimulate lower growth. But don't prune too extremely or the plant may not recover.