If you've already done some reading, you're probably familiar with tapla's 5-1-1 mix. That should work well (it has for me) for all three plants that you mentioned. The only change that you'll need to make is to leave out the lime when making the blueberries' mix. The purpose of the lime is to raise the pH of the mix (which is why it's a no-no for blueberries, who require an acidic media) and to provide a source of both calcium and magnesium. For the blueberries, you can replace the lime with gypsum (for calcium) and then mix a little bit of epsom salt (1/8 to 1/4 tsp per gallon once per week or so) into your irrigation water to provide magnesium. As for pot size, I've grown both blueberries and raspberries successfully in pots from 7 to 15 gallons. I don't see the need to go any bigger than 15 gallons, especially if they'll only be in the pots for a year or two. I'll conclude with a few pointers on growing blueberries in pots...

• If at all possible, irrigate them exclusively with rain water. If you do need to use well or municipal water, which typically contains bicarbonates that will raise soil pH, you'll likely need to acidify it.

• Blueberries do best with a fertilizer that provides nitrogen in the ammonium or urea forms (as opposed to nitrate). I like Jack's Acid Special, but you can also use Miracle-Gro or Mir-Acid.

• Blueberries' root systems are very sensitive to drought, especially when they're first getting them established. Never let the soil

  get too dry.

If you've already done some reading, you're probably familiar with tapla's 5-1-1 mix. That should work well (it has for me) for all three plants that you mentioned. The only change that you'll need to make is to leave out the lime when making the blueberries' mix. The purpose of the lime is to raise the pH of the mix (which is why it's a no-no for blueberries, who require an acidic media) and to provide a source of both calcium and magnesium. For the blueberries, you can replace the lime with gypsum (for calcium) and then mix a little bit of epsom salt (1/8 to 1/4 tsp per gallon once per week or so) into your irrigation water to provide magnesium. As for pot size, I've grown both blueberries and raspberries successfully in pots from 7 to 15 gallons. I don't see the need to go any bigger than 15 gallons, especially if they'll only be in the pots for a year or two. I'll conclude with a few pointers on growing blueberries in pots...

• If at all possible, irrigate them exclusively with rain water. If you do need to use well or municipal water, which typically contains bicarbonates that will raise soil pH, you'll likely need to acidify it.

• Blueberries do best with a fertilizer that provides nitrogen in the ammonium or urea forms (as opposed to nitrate). I like Jack's Acid Special, but you can also use Miracle-Gro or Mir-Acid.

• Blueberries' root systems are very sensitive to drought, especially when they're first getting them established. Never let the soil

  get too dry.

If you've already done some reading, you're probably familiar with tapla's 5-1-1 mix. That should work well (it has for me) for all three plants that you mentioned. The only change that you'll need to make is to leave out the lime when making the blueberries' mix. The purpose of the lime is to raise the pH of the mix (which is why it's a no-no for blueberries, who require an acidic media) and to provide a source of both calcium and magnesium. For the blueberries, you can replace the lime with gypsum (for calcium) and then mix a little bit of epsom salt (1/8 to 1/4 tsp per gallon once per week or so) into your irrigation water to provide magnesium. As for pot size, I've grown both blueberries and raspberries successfully in pots from 7 to 15 gallons. I don't see the need to go any bigger than 15 gallons, especially if they'll only be in the pots for a year or two. I'll conclude with a few pointers on growing blueberries in pots...

• If at all possible, irrigate them exclusively with rain water. If you do need to use well or municipal water, which typically contains bicarbonates that will raise soil pH, you'll likely need to acidify it.

• Blueberries do best with a fertilizer that provides nitrogen in the ammonium or urea forms (as opposed to nitrate). I like Jack's Acid Special, but you can also use Miracle-Gro or Mir-Acid.

• Blueberries' root systems are very sensitive to drought, especially when they're first getting them established. Never let the soil

  get too dry.

If you've already done some reading, you're probably familiar with tapla's 5-1-1 mix. That should work well (it has for me) for all three plants that you mentioned. The only change that you'll need to make is to leave out the lime when making the blueberries' mix. The purpose of the lime is to raise the pH of the mix (which is why it's a no-no for blueberries, who require an acidic media) and to provide a source of both calcium and magnesium. For the blueberries, you can replace the lime with gypsum (for calcium) and then mix a little bit of epsom salt (1/8 to 1/4 tsp per gallon once per week or so) into your irrigation water to provide magnesium. As for pot size, I've grown both blueberries and raspberries successfully in pots from 7 to 15 gallons. I don't see the need to go any bigger than 15 gallons, especially if they'll only be in the pots for a year or two. I'll conclude with a few pointers on growing blueberries in pots...

• If at all possible, irrigate them exclusively with rain water. If you do need to use well or municipal water, which typically contains bicarbonates that will raise soil pH, you'll likely need to acidify it.

• Blueberries do best with a fertilizer that provides nitrogen in the ammonium or urea forms (as opposed to nitrate). I like Jack's Acid Special, but you can also use Miracle-Gro or Mir-Acid.

• Blueberries' root systems are very sensitive to drought, especially when they're first getting them established. Never let the soil

  get too dry.