Are these two fertilizers actually different?

No. The guaranteed analysis is the same: 19% nitrogen, 19% phosphate and 19% potash, with the same nitrogen split and the same 0.5% limits on sodium, insolubles and moisture. Only the brand and label wording differ.

Which is better for a lawn?

Either works. Both are high in phosphorus, which helps lawns that test low in it. Product B gives clearer spreading and watering directions, which makes even coverage easier.

Can I use either on vegetables and flowers?

Yes. Product B states flowers and vegetables directly. With either one, keep granules off leaves, mix lightly into the soil and water well.

Will it burn my plants?

It can if you over-apply or spread on wet foliage in hot sun. Apply in the morning or early evening, water thoroughly, and follow the label rate.

Is one a slow-release fertilizer?

No. Both rely on urea and ammoniacal nitrogen that release over weeks, not coated slow-release granules. Expect to reapply through the season.

Does it dissolve for liquid feeding?

The phosphate and potash are water soluble and insolubles are capped at 0.5%, so it dissolves reasonably well. It is sold as a granular spreader product, not a formulated liquid feed.

19-19-19 All Purpose Fertilizer vs 19-19-19 Triple 19 Fertilizer

These are the same fertilizer: both are 19-19-19 NPK with identical guaranteed analysis, the same nitrogen split (4.0 nitrate, 4.5 ammoniacal, 10.5 urea), the same 0.5% limits on sodium, insolubles and moisture, and the same 1Kg, 5Kg and 25Kg sizes. The only real differences are the label and the application guidance, so buy whichever store you trust or can get it from. Both suit gardens, flowers, vegetables and turf, and both need watering in after spreading.

Choose the 19-19-19 All Purpose Fertilizer if you want the plain all-purpose label aimed at garden beds and phosphorus-poor lawns.
Choose the 19-19-19 (Triple 19) if you want the version with clear spreader and watering instructions printed on the listing.

Prices

19-19-19 All Purpose Fertilizer: $26.53 at Hartville Hardware (checked today)
19-19-19 Triple 19 Fertilizer: $25.99 at Do it Best (checked today)
Difference: the 19-19-19 Triple 19 Fertilizer is $0.54 cheaper than the 19-19-19 All Purpose Fertilizer today

	19-19-19 All Purpose Fertilizer	19-19-19 Triple 19 Fertilizer
NPK analysis	19-19-19, all water soluble	19-19-19, all water soluble
Nitrogen sources	4.0 nitrate, 4.5 ammoniacal, 10.5 urea	Same split, stated as min/max guarantees
Package sizes	1Kg, 5Kg, 25Kg	1Kg, 5Kg, 25Kg
Application guidance	General garden and lawn use	Spreader, mix into soil, water in, morning or early evening
Stated uses	Gardens and phosphorus-deficient lawns	Most plants and turf, flowers and vegetables
Solubility	Water soluble phosphate and potash, low insolubles	Same, 0.5% max insolubles
Brand and label	Elk Mound Seed	41 Feed And Garden

Spec	19-19-19 All Purpose Fertilizer	19-19-19 Triple 19 Fertilizer
Total nitrogen	19.0	19.0 percent by weight, minimum
Nitrate nitrogen	4.0	4.0 percent by weight, maximum
Ammoniacal nitrogen	4.5	4.5 percent by weight, minimum
Urea nitrogen	10.5	10.5 percent by weight, maximum
Water soluble phosphate	19.0	19.0 percent by weight, minimum
Water soluble potash	19	19 percent by weight, minimum
Sodium as NaCl	0.5	0.5 percent by weight on dry basis, maximum
Matter insoluble in water	0.5	0.5 percent by weight, maximum
Moisture	0.5	0.5 percent by weight, maximum
Package sizes	1Kg, 5Kg, 25Kg	—
Package Size	—	1Kg, 5Kg, 25Kg

19-19-19 All Purpose Fertilizer vs 19-19-19 Triple 19 Fertilizer

Prices

19-19-19 All Purpose Fertilizer vs 19-19-19 Triple 19 Fertilizer

Prices

19-19-19 Triple 19 Fertilizer

What separates them

Price history

Prices at every store