Gardens and Revolutions
When I see this card, I think of the neat rows of vegetables and herbs you see in some gardens - beautifully tended and all growing in rythm (so not all the cabbages or carrots mature together). I remember a particularly spectacular example of that in the chateau de Villandry, in the Loire Valley, where the gardens are both traditional Renaissance physic and vegetable gardens and so perfect, that they look ornamental too, for order and symmetry can be beautiful, if rather rigid.
In the Camoin card, Jodo and Camoin added a bird in the central shield - a phoenix, suggesting the idea of renaissance that can grow out of stability, and that all things, even what is perfect at one time, transforms again - either into instability or stagnation. It's also a card of warning, I think - don't seek to keep things exactly the same and perfect all the time, you must allow for things to evolve dynamically or they will stagnate, then stultify, then crack, then crumble.
In the Héron Conver reproduction, the central shield contains three fleur de Lys, the emblem of French royalty - the guarantor (in the mid-18th century), of material stability. But the card contains the seed of Revolution already - in 1760 the new ideas were already in full swing. 3 fleur-de-lys, the number of expansion and creation, together with 4 deniers, makes 7 - the number of action in the world, a sacred number that suggess all sorts of bouleversements, a form of accomplishment (as the French Revolution was seen as an accomplishment of the French people - who transformed from subjects to citizens). In a reading? Your stability contains the seeds of instability and progression. Build on stabilty but (again) do not seek to hold onto it.
Come to think of it, Camoin and Jodo only expressed, with the central Phoenix, that which was implied in the card (as they did with the Papesse's egg). Of course, all this Revolutionary projection can only happen with hindsight - in 1760 they had no way of knowing all this! Most French subjects (as they were then) thought things would stay the same, with the good king on his throne, God blessing him and the Kingdom of France (despite its recent wars with England in Canada) and the three orders of nobility, clergy and third-estate, forever in their place, like the ordered vegetable rows of the castle of Villandry.