Field of Milkweed, No Monarchs

No eggs or cats yet. Milkweed (A. Speciosa) is getting large.

Here is a closer look at A. speciosa

Wonderful pictures Sal, you should put them in the database.
Is this field your property? I've got cats but no adults so far...I just don't have enough milkweed yet this year. All mine froze last winter and I don't want to add A curassavica which is almost all that is being sold around here.

Hi Floridian,
No this isn't my property. It's on a nature preserve. There is this 1/4 mile stretch of ditch that all these milkweed plants are concentrated in. Thing is, I have seen monarchs in the past flying around, Have seen a few eggs, and very few cats. For the most part these milkweeds go uneaten every year. I don't know if it's do to predation or preference. A few miles away there is another type of milkweed A. Fascicularis that always has Monarch eggs & cats. Seems as if the Monarchs prefer this type of milkweed over the A. Speciosa. Anyone else experience this?