Hi just noticed a few brown spots pop up on my cheese plant and think its phos deficiancy . its 5 weeks through veg and the phos on the npk of my nutrients is only 1.. do i need more ?
A lack of P causes stunted growth and smaller leaves, leaves turn bluish green and blotches often appear. Stems, leaf stems and main veins turn reddish-purple starting on the leafs underside. Hope that helped ya.