RHS general container guidance puts liquid feeding from April to September. UF’s June to early August window is for leaf-tissue sampling, not a potted-olive feeding calendar.
How to feed a potted olive tree
Treat feeding as an active-growth decision for a potted olive, not a year-round routine. RHS places general container feeding from April to September.
Plant coveredOlea europaeaOlive tree (indoor) · outdoor garden
Check for active growth
When to fertilize
Consider feed during active growth rather than treating it as a year-round routine. April to September and June to early August come from different contexts, so they are not a precise indoor schedule. Local light, temperature, fruiting and potting media remain unresolved.
Follow the product label
Fertilizer type and dose
UF identifies nitrogen, boron and potassium as primary olive-nutrition concerns and recommends a plan informed by soil and plant-tissue testing. It does not name a safe product or concentration for a houseplant pot.
Inspect a stressed plant before feeding
When not to fertilize
Leaf discoloration or weak growth should trigger assessment rather than blind feeding. Boron has a narrow range between deficiency and toxicity, and a visual symptom alone does not establish a nutrient deficiency in a container.
Sources
- University of Florida IFAS ExtensionIntroduction, nutrient sampling, and concerns for olive production, lines 18-28, 31-33, and 92-99.
- Royal Horticultural SocietyFeeding plants in containers and feeding houseplants sections.