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The Purwodadi Botanical Garden is one of the ex situ plant protection areas in Indonesia. One of the plant collections at Purwodadi Botanical Garden is a collection of aquatic plants. Aquatic plants are known to have many uses, as medicinal ingredients, feed ingredients, bioindicators and phytoremediators, and ornamentals in general. However, people's understanding of aquatic plants is still lacking. This research aims to develop digital media for Introduction to Aquatic Plants (PenTA) in Purwodadi Botanical Gardens (PBG) in the form of a website to facilitate public access. Multiple media are available on the site including videos, brochures, booklets and modules. In addition, there are also 32 ponds in the PBG with information about the plant species in these ponds. This media website aims to make it easier for the public to find out about aquatic plant

One type of heavy metal that pollutes waters is heavy metal copper (Cu). Cu metal is basically an essential metal for living things, but with high levels of Cu metal, it can interfere with the body's metabolic processes. Therefore, there needs to be a solution to overcome Cu metal pollution in the waters. One of them is phytoremediation, or the use of plants to absorb pollutants. Spear leaf plant (Sagittaria lancifolia) is proven to be able to absorb heavy metal copper (Cu). However, the growth response is not yet known in more detail. Therefore, this study aimed to determine the growth response of pike leaf (Sagitaria lancifolia) under stress of heavy metal copper (Cu). This research is an experimental study with a completely randomized design (CRD). The experiment was conducted with 8 treatments (4 treatments with 2 tests) and 3 replications. The 4 treatments were distinguished based on differences in the concentration of Cu metal used, namely 0 mg/L, 1mg/L, 2mg/L, and 3 mg/L. The results showed that exposure to heavy metal copper (Cu) in each concentration variation and detention time variation did not have a significant effect on the growth and morphological conditions of spear leaf (Sagittaria lancifolia) plant, so this plant deserves to be used as an option in recovery efforts of water environment contaminated with heavy metal copper (Cu).Keywords – Response, Lanceleaf arrowhead, Sagittaria lancifolia, Heavy metals, Copper (Cu)

One of Indonesia's strategies to improve the quality of its economy as a developing country is to boost industrial activity. However, the existence of industry has a detrimental consequence, one of which is heavy metal copper pollution (Cu). Phytoremediation is one of the ecologically acceptable pollutant treatment methods. Phytoremediation approaches using Sagittaria lancifolia plants are thought to be capable of overcoming heavy metal Cu contamination in the environment. This research is a preliminary study into the limitations of the Sagittaria lancifolia plant's capacity to absorb heavy metal Cu. This study employed an experimental technique, which was carried out between March 26 and April 7, 2021, in the Purwodadi Botanic Garden's Greenhouse, with four concentration variations, namely 0 mg/L, 1 mg/L, 3 mg/L, and 5 mg/L. According to the result of this research, the plant Sagittaria lancifolia may remediate heavy metal Cu at a maximum concentration of 5 mg/L. This is due to the fact that at this concentration, the Sagittaria lancifolia plant presents indications of death, particularly severe chlorosis and necrosis.