What is most striking about the part of the park which gently slopes towards the Adriatic State Roadway which marks the boundaries, is the sense of harmony among the various parts, a sort of vital and pleasant network of cultivated land, whether vineyards, olive groves or grain, abandoned fields which gradually returned to their natural state, rows of large trees, hedges. An important element is the large private park of Villa Imperiale with its secular plants, although most of them were certainly introduced into the park by man.
Since the territory under examination has been inhabited since the Neolithic age, and since man has been a powerful element of disturbance and change, the original woodland formations and even the pioneer beach and cliff formations, have undergone drastic variations. Therefore, today we can only make reference to what remains of the ancient formations and to what man has introduced and conditioned over the centuries.

There is evidence of Mediterranean vegetation, however it suffers from the sub-continental character of the climate, and also from the influence of the "tramontana" from the North, and winds from the North-Northeast, locally referred to as the "bora". If we also consider the type of substratum, we understand that the conditions are lacking for even the minimum development of undergrowth, which is instead present in much greater quantity on the limestone massifs of the hinterland. These considerations lead many authors to sustain that the presence of holm-oak (Quercus ilex) is of anthropic origin, almost certainly in relationship to the development of the Renaissance Villas.
The same associations found in the more inland hills of Pesaro are also found here: woods of oak and hornbeam (Ostrya carpinifolia), where the Turkey Oak (Quercus cerris) is increasingly rare, and where the presence of pubescent oak (Quercus pubescens) is much more common, together with manna ash (Fraxinus ornus), field maple (Acer campestre), smooth-leafed elm (Ulmus minor). The characteristics typical of the mesophy oak groves are evident.
A certain Mediterranean character, probably relict in nature, of several formations is given by the presence of Phyllirea media, ailanthus (Rhamnus alaternus), laurel (Laurus nobilis), Smilax (Smilax aspera), St. John's rose (Rosa sempervirens).
The presence of several conifer species is to be referred to the historical settlements relative to the renaissance villas: stone pine (Pinus pinea), cluster pine (Pinus pineaster), Cypress (Cupressus sempervirens and C. Lusitanica), and the presence of the holm-oak (Quercus ilex) and laurustine (Viburnum tinus). Successive reforestation in the 1960s added sycamore maple (Acer Pseudoplatanus), Aleppo pine, black pine (Pinus nigra), Siberian elm (Ulmus Laevis) and other allochthonous species to the Park flora.
As for the rest, the vegetation of the landscape is that typical of an agricultural environment, intensely cultivated until the 1950s, where the arboreal species are represented by olive, fig, cherry, mulberry, sorb, almond, with the presence of rows and isolated exemplars of large elders, which are interspersed along tamarisk (Tamarix cf. Africana) and Christ's thorn (Paliurus spinachristi) hedges.
Where the fields have been abandoned and are no longer cultivated, there are settlements of vegetation which is initially Dittrichia viscosa, Rubus ulmifolius and caesius, Clematis vitalba, a situation which in many cases is stable or, in any case, in very slow evolution, also forming extensive fields of perfumed broom in several spectacular stretches. The historic presence of locust trees, introduced centuries ago by man, unfortunately often enters in this phase of post-cultivation vegetation together with another infesting species, ailanthus (Ailanthus altissima).
Almost everywhere, we find the species of the highest ecological value, blood-orange (Cornus sanguinea), whitethorn (Crataegus monogyna), blackthorn (Prunus spinosa). In cooler and more shady positions we find filbert (Corylus avellana), dondolino (Coromilla emerus), butcher's broom (Ruscus aculeatus). Therefore, the overall aspect of the Park in the inland belt is harmonious and picturesque, especially where large hedges ornate the borders of the cultivated fields which extend to the confines of the sea-cliffs.