Use the pack­ets of fresh cut flower food avail­able from your florist or which is includ­ed in your ready made bou­quet. This should be dis­solved in the water in the stat­ed strength. It pro­vides the nutri­ents your flow­ers need (potas­si­um, phos­ph­er­ous and nitro­gen) for longevi­ty and also con­tains anit-bac­te­r­i­al prop­er­ties to help keep the water clean.

Using the flower food in high­er con­cen­tra­tion is detri­men­tal to the flow­ers as it will begin the process of reverse-osmo­sis, caus­ing all nutri­ents to be drawn out of the stem and into the water.