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What goes wrong with herbs (thyme/scallion) in Jamaican conditions, how to recognise it early, and what the crop needs at each stage. 3 common problems covered.
| Plant family | Lamiaceae |
|---|---|
| Target soil pH | 6 – 7 |
| Seedling stage | Transplant to day 14 |
| Vegetative stage | To day 45 |
| Flowering stage | To day 45 |
| Typical yield | 0.2 lbs per plant |
| Harvest | Continuous — pick repeatedly over the season |
Small fly larvae that tunnel between the upper and lower epidermis of leaves.
Signs to look forTiny, slender insects that rasp plant tissue and suck the sap. Major vectors for viruses.
Signs to look forA general term for decay of roots caused by soil-borne fungi (Pythium, Rhizoctonia, Phytophthora) in waterlogged conditions.
Signs to look for| Stage | Nutrition | Why |
|---|---|---|
| Seedling | High Phosphorus | Promote root establishment. |
| Vegetative | High Nitrogen | Push vigorous green leaf growth, as the leaves are the harvested product. |
| Flowering | Low Fertilizer | Flowering often turns herbs bitter. Prune flowers and reduce fertilizer. |
| Fruiting | Low Fertilizer | Maintain leaf harvest. |
The problems growers report most often are Leaf Miners, Thrips, Root Rot. Each one is described above with the symptoms to look for and the recommended response.
Herbs (Thyme/Scallion) performs best in soil with a pH between 6 and 7. Outside that range nutrients become progressively less available to the plant even when they are present in the soil.
Counting from transplant, the seedling stage runs to about day 14, vegetative growth to about day 45, and flowering to about day 45, after which the crop moves into fruiting or bulking.
PlantArmor keeps your herbs (thyme/scallion) spray records, input costs and harvest weights in one place, and works offline while you are out in the field. Free to use.
Pest descriptions and treatments above come from the same reference library the PlantArmor app uses in the field. Pesticide registrations and permitted uses change — always read the current product label and observe the stated rate, re-entry period and pre-harvest interval.