Living plants have recently been exploited for unusual tasks such as energy conversion1–6 and environmental sensing.7–12 Yet, using plants as small-scale autonomous energy sources1–5 was obstructed by insufficient power outputs for steadily driving even low-power electronics. Moreover, multicable and -electrode installations on the plants made a realization challenging. Here, we show that plants, by a minimal modification of the leaf epicuticular region and by exploiting their intrinsic circuitry, can be transformed into cable-free, fully plant-enabled integrated systems for multisource energy conversion. In detail, leaf contact electrification caused by wind-induced inter-leaf tangency was magnified by a transparent elastomeric coating on one of two interacting leaves for converting wind energy into harvestable electricity. Further, augmentation of the power output is achieved by coupling multi-frequency band radio frequency (RF) energy conversion modes using the same plant as an unmatched Marconi-antenna. In combination, we observed up to 1100 % enhanced energy accumulation respective to single source harvesting and a single plant like ivy could power a commercial sensing platform wirelessly transmitting environmental data. This shows that living plants could autonomously supply application-oriented electronics while maintaining the positive environmental impact13 by their intrinsic benefits such as O2 production, CO2 fixation, self-repair, and many more extremely difficult (if at all possible) to realize in artificial harvesters.