I also live in 5b, Ottawa. My bulbs have already started to grow again. From my experience, fertilizer is not needed until the flowers have faded (other growers my have a differnt opinion). I use the organic liquid-based fertilizer sold by Lee Valley (I actually use this for almost all my plants) called Wegener's.

Suzanne

Feed, feed, feed...but very carefully. Over fertilizing causes a lot more damage than not fertilizing. The rule I follow is "feed me when I'm hungry". Once my Amaryllis bulbs wake up and put up leaves, I start feeding them till they go dormant and rest.

How do your plants tell you "feed me, I'm hungry!"?

I too would love to know?

By the time they are speaking, it is late... :o) (I mean yellow words.)

They speak green words before the yellow words. When they are actively growing and leafing out, they need to be fed. Yellowing of leaves when they are not about to rest means trouble. But it is not too late. It's either the plant is sick or needs more nourishment. Checking the root system will confirm this. No or very minimal roots would require lesser of not no fertilizer at all. If the root system is alright, then it lacks nutrition...FEED!

Werdoes... They don't even know that yellow is the color of envy.