Table 2. Phenological observation of plant materials.

	May				June				July				August				September				October
Z.e	•		θ	θ	θ	+	⊥	▴
T.e	•		θ	θ	θ	+	⊥	⊥	▴	▴
H.a	•		θ	θ	θ	+	⊥	⊥	⊥	▴	▴
G.g	•		θ	θ	θ	θ	+	⊥	⊥	▴
C.c	•		θ	θ	θ	+	⊥	▴
C.s	•		θ	θ	θ	+	⊥	▴	▴
Description
•	Sowing seeds
θ	Germination
+	Planting seedlings in the field
⊥	Seedling growth
▴	Budding
	Flowering and harvest