Eat More Plants
...and try some of the many other easily accessible nutrients available, you'll be surprised.

Getting a diversity of plants in your diet is important for giving your body the information it needs to respond adequately to its environment. In addition to all the benefits your body will receive from eating nutrient rich (organic) or homegrown leafy greens, and crunchy roots, there are a whole host of plant compounds which enable your body to eliminate histamine, and the resulting inflammation.

Here are some of the more effective plants and nutrients for histamine reduction and overall health.

• Tulsi (Holy Basil) - An adaptogen prized for it's balancing effects on the body, also naturally antihistamine.
  -Side effects will likely include restful sleep, tranquil mind, less stress, more energy.
  -Try it as a tea.
• Turmeric - Powerful anti-inflammatory with antihistamine properties.
  -Side effects will likely include improved circulation, flexibility, digestion, healthy 'glowing' skin.
  -Try capsules or fresh root if you can find it. Search recipe's for "golden milk" online.
• Stinging Nettles - Another great one to calm down congestion and irritation, seemingly ironic due to its topical "stinging" characteristics.
  -Try it as a tea, with 0% stinging ;)
  -Side effects will likely include healthier skin, decongestion, better digestion.
• Vitamin C - The classic vitamin antihistamine. If you do nothing else just take some Vitamin C, on a regular basis. Increase dosage slowly here, because on this one... Side effects may include diarrhea. Most people can safely approach 2000mg before any intestinal discomfort occurs. But just start slow and increase over time. Of course other side effects may include better immune system, and protection from oxidative stress.
• Bee Pollen - From a local source, if you have access, is also quite good. You were on the right track with honey, but it's the pollen which seems to tame allergies... no wonder, again with the like-cures-like principle, you let bees gather pollen from all around you, and ingesting small amounts is not only nutritious, it's full of good information your body can use to adapt to it's environment.

There are truly a near limitless number of beneficial plants you can bring into your life to improve your health and vitality. These are just the first ones that came to mind for allergy season. Tulsi is delicious as a tea. Turmeric is pungent, and spicy, but really good in a curry, or in golden milk with milk, ghee, and honey. Most people won't find much exciting about the taste of nettle... but it feels good in the body, and soon you'll be enjoying that 'green' taste. Vitamin C, c'mon, there are lot's of tasty options -- kiwis, oranges, camu camu, rosehip tea, or just take capsules. Lastly, Bee Pollen is pretty tasty in small doses.

Hope this helps!