UF recommends feeding Adenium obesum weekly during the summer growing season, while withholding fertilizer during the stated winter rest. Do not carry the weekly instruction into the rest period or apply it to a dormant plant.
How to fertilize a desert rose
Feed Adenium obesum during active summer growth, then stop during winter rest. UF recommends a low-dose liquid fertilizer each week in summer.
Plant coveredAdenium obesumDesert rose · indoor container
Check for active growth
When to fertilize
Feeding belongs to active summer growth. During winter rest the plant may lose leaves and flower activity, and UF directs the grower to withhold water rather than continue normal feeding. Rest timing varies among plants and hybrids.
Follow the product label
Fertilizer type and dose
Use a low-dose liquid fertilizer according to the manufacturer’s label during active summer growth. The source does not specify a brand or nutrient ratio and does not support a high-dose or slow-release substitute.
Inspect a stressed plant before feeding
When not to fertilize
Yellowing or leaf drop can be associated with overfertilizing, overwatering or low light, while seasonal leaf drop can be part of winter rest. Check growth stage and root-zone moisture before adding feed.
Sources
- University of Florida IFAS ExtensionIndoor/Home/Office Cultivation Information; fertilizer; winter rest