Table 3. Morphological features of plant materials.

		Morphological features
Plant	Time	Stem length (cm)	Stem thickness (mm)**	Flower length (cm)	Flower diameter (cm)	Flower weight (g)*
Zinnia elegans	Jul.	48.1a	3.7a	50.9a	5.7a	33.2a
	Aug.	47.9a	3.0bc	51.1a	5.6a	27.8b
	Sept.	47.7a	2.7c	50.6a	6.2a	23.6ab
	Oct.	48.3a	3.6ab	51.4a	6.1a	25.1ab
		ns	P < 0.01	ns	ns	P < 0.05
Plant	Time	Stem length (cm)**	Stem thickness (mm)*	Flower length (cm)**	Flower diameter (cm)*	Flower weight (g)**
Tagates erecta	Jul.	47.6a	4.6a	50.2a	4.9ab	64.7a
	Aug.	43.0a	3.6ab	46.8a	4.6ab	40.9b
	Sept.	35.5b	3.3b	39.3b	4.9ab	27.1c
	Oct.	29.8b	3.2b	33.7b	5.1a	19.6c
		P < 0.01	P < 0.05	P < 0.01	P < 0.05	P < 0.01
Plant	Time	Stem length (cm)	Stem thickness (mm)*	Flower length (cm)	Flower diameter (cm)	Flower weight (g)
Helianthus annuus	Jul.	44.3a	7.1a	46.8a	11.2a	81.2a
	Aug.	44.6a	6.3ab	48.2a	12.3a	79.3a
	Sept.	43.4a	4.5c	46.9a	11.4a	41.1a
	Oct.	32.2a	3.5bc	35.0a	9.3a	27.8a
		ns	P < 0.05	ns	ns	ns
Plant	Time	Stem length (cm)**	Stem thickness (mm)*	Flower length (cm)**	Flower diameter (cm)*	Flower weight (g)**
Gomphrena globosa	Jul.	36.5a	2.3a	38.4a	1.8a	16.4a
	Aug.	30.0b	1.7b	31.9b	1.6ab	6.5b
	Sept.	25.8b	1.6b	27.5b	1.5b	4.5b
	Oct.	16.2c	1.3b	17.8c	1.4b	1.8b
		P < 0.01	P < 0.05	P < 0.01	P < 0.05	P < 0.01
Plant	Time	Stem length (cm)*	Stem thickness (mm)*	Flower length (cm)*	Flower diameter (cm)*	Flower weight (g)*
Centaurea cyanus	Jul.	26.4a	1.6a	28.3a	2.7a	13.2a
	Aug.	22.6ab	1.1b	24.9ab	2.4b	7.5ab
	Sept.	18.9b	0.8b	21.0b	2.3a	1.3b
		P < 0.05	P < 0.05	P < 0.05	P < 0.05	P < 0.05
Plant	Time	Stem length (cm)**	Stem thickness (mm)*	Flower length (cm)**	Flower diameter (cm)	Flower weight (g)**
Cleome spinosa	Jul.	40.8a	3.6a	51.3a	8.3a	16.2a
	Aug.	30.3b	2.4b	37.3b	8.0a	4.3b
		P < 0.01	P < 0.05	P < 0.01	ns	P < 0.01

Notes:

Means with different letters within each column are significant at 0.01 and 0.05 level (**P < 0.01–*P < 0.05).

Means with same letters are not significant (ns).