Yeah, I sure can, those are good pix. I don't see anything like pine needles around (pine can be problematic for some plants, but being acidic weed should be ok I think) on the ground, but your pix are always in the shade or something. You said that this plant is getting full sunlight for 9 hours each day? Because if you're adding fertilizers to something that's planted in what appears to be decent ground, the damn thing should grow. I'm having N deficiency issues with some plants, but they're potted, it's hot, they get afternoon sun, and I used cheap soil.
I ask about the light and how intense it is because some plants just can't use the nutrients if they don't have enough light to power the engine. Even with the N deficiency I thought new growth would come in light green, if it was really bad anyway. I'm drawing a blank, have you checked those plant problem links? (I think I linked them, if not let me know.) Based on your link along with your pix, I still think it's nitrogen. It's definitely not anything like zinc, the sulfur deficiency shows mature leaves at differing heights and maturity levels.
Here's an idea, since you're in an area with other plants already growing. First, make sure there's nothing directly above the plant, and then find some organic fert or soil that has microbes. You want to look for micorrhizae or micorrhizal fungi. Search it on Google and look at the images, these critters are being used by all sorts of horticulturists, nurseries, arborists, and farmers. It helps the plant make better roots for absorbing water and nutrients, and helps those roots do it more efficiently.