A field experiment was conducted on Gladiolus grown at the nursery of the Antoniadis Botanical Gardens, Horticulture Research Institute (HRI), ARC, Alex., Egypt., during two successive seasons 2018 and 2019 to study the influence of irrigation intervals (3 and 6 days) under three different levels of potassium sulphate (K) fertilizer (0, 50, and 100%) applied at (1% and 2%) alone with three percentages of the recommended (2g pot-1) soil amended K with two levels of humic acid (HA) (1 and 2 mll-1) as soil dressing to measure the vegetative growth, flowering traits, corms and cormels parameters and chemical components of leaves. The obtained results showed applying low water irrigation intervals under 100% K with 2 mll-1 HA soil dressing gave the highest value in each of vegetative, flowering parameters, corm and cormels traits, chlorophyll a and b, and chemical components (K, N and P) content in leaves. Nevertheless, a non-significant variation was detected in the leaf width, spike diameter, corm diameter, and dry weight of cormels in gladiolas plants. Plants grown without K and 1 mll-1 HA (control) gave the minimum values under both irrigation intervals in all parameters.