The main trace elements and micronutrients are molybdenum, manganese, zinc, iron, boron and copper plus calcium for tomatoes. These elements are best provided as water-soluble chelate salts rather than granules.

 Interesting Facts about Seaweed

• In addition to the trace elements there are another 60 or so chemicals in seaweed.
• Seaweed extract is a concentrated elixir to use as a foliar feed or root stimulant.
• Seaweed is a organic fertiliser containing bio stimulants and iodine
• Over time seaweed acidifies and slowly adds iron to the soil.
• Seaweed in is already added to Doff tomato feed
• Gardeners near the coast have used seaweed as a soil improver for centuries.
• Seaweed contains plant hormones called cytokinins, mannitol and auxins.

Turning Flowers Blue

• The litmus test for plant colourants is generally can they turn flowers from pink or red to a pleasing blue.
• Hydrangea plants will be blue in acidic soil and pink or red in neutral or alkaline soil.
• Colourant with aluminium and iron salts turns pale pink florets pale blue and red flowers purplish.
• Soil acidifiers help make micronutients available
• Fertilizers containing phosphate salts that typically convert  metal ions into insoluble solids  are of no nutritional value to the plants. A chelating agent that keeps these metal ions in a soluble form.

Other Garden Chemicals

• Lime is used to increase the ph in the soil to help vegetable crops.
• Sequestrine plant tonic is a soluble tonic for acid-loving ericaceous plants
• Baby bio indoor fertiliser liquid has an organic content including  uric nitrogen.
• Growth and root promoting hormones are now far more frequently found in a gardeners dispensary.
• Bio- stimulants and flowering enhancers are used in commercial nurseries for plants sold through garden centers and supermarkets.