Rowan berries are generally considered non-poisonous for humans when consumed in small quantities. However, they can cause mild stomach upset or diarrhea if eaten in large amounts. It is important to note that some people may have allergies or sensitivities to certain compounds in rowan berries, so it is best to consume them in moderation. Additionally, rowan berries are toxic to some animals, so it is important to keep them away from pets. **

Yes, parts of poisonous plants can sometimes be treated to make them non-toxic. This process usually involves specific methods such as drying, cooking, or fermenting the plant parts to break down or remove the toxic compounds. However, it is important to note that not all poisonous plants can be made safe for consumption through treatment, and caution should always be exercised when dealing with potentially toxic plants. Consulting with a knowledgeable expert or botanist is recommended before attempting to treat any poisonous plant for consumption. **

Yes, the garden autumn monkshood (Arendsii) is poisonous. All parts of the plant, including the roots, leaves, and flowers, contain toxic alkaloids that can be harmful if ingested. It is important to handle this plant with caution and keep it away from children and pets. If ingested, it can cause symptoms such as nausea, vomiting, and dizziness, and in severe cases, it can be fatal. **

Some of the poisonous mushrooms that can be found in gardens include the Death Cap (Amanita phalloides), the Destroying Angel (Amanita bisporigera), and the False Morel (Gyromitra spp.). These mushrooms can be extremely toxic if ingested, causing symptoms ranging from gastrointestinal distress to organ failure and even death. It is important to be cautious when foraging for mushrooms in gardens and to avoid consuming any wild mushrooms unless you are absolutely certain of their identity. **

Some common poisonous mushrooms that can be found in gardens include the Death Cap (Amanita phalloides), the Destroying Angel (Amanita bisporigera), and the False Morel (Gyromitra spp.). These mushrooms contain toxins that can cause severe illness or even death if ingested. It is important to be cautious when foraging for mushrooms in gardens or any other outdoor areas to avoid accidental poisoning. **

Depending on your location, some common poisonous spider species that could be found in your garden include the black widow spider (Latrodectus mactans) and the brown recluse spider (Loxosceles reclusa). These spiders are known for their venomous bites, which can cause serious health issues in humans. It is important to be cautious when working in your garden and to wear gloves to protect yourself from potential spider encounters. **

Some common poisonous spider species that can be found in gardens include the black widow spider and the brown recluse spider. These spiders are known for their venomous bites, which can cause serious health issues in humans. It is important to be cautious when working in the garden and wear gloves to protect yourself from potential spider bites. If you suspect that you have been bitten by a poisonous spider, seek medical attention immediately. **

Yes, there are certain varieties of apples that contain toxic compounds in their seeds, such as cyanide. However, the amount of cyanide in apple seeds is typically very small and would need to be consumed in large quantities to be harmful. As for trees with poisonous apples, there are no known species of trees that naturally produce poisonous apples. **